SHOPPING BAG
0 items
Toothpick : Technology and Culture
, by PETROSKI, HENRY
- ISBN: 9780307279439 | 030727943X
- Cover: Trade Paper
- Copyright: 11/4/2008
Sorry, this item is currently not available.
Like "The Pencil," Petroskis "The Toothpick" is a celebration of a humble yet elegant device. As old as mankind and as universal as eating, this useful and ubiquitous tool finally gets its due in this wide-ranging and compulsively readable book.
Henry Petroski is the Aleksandar S. Vesic Professor of Civil Engineering and a professor of history at Duke University. The author of a dozen previous books, he lives in Durham, North Carolina.
Prologue
The plain wooden toothpick, it may be argued, is among the simplest of manufactured things. It consists of a single part, made of a single material, intended for a single purpose–from which it gets its simple name. It is also among the most convenient and ready of things. It can be used directly out of the box–there being no instructions to read, no parts to assemble, no priming or booting required, and no maintenance expected. When it has served its purpose, it is simply discarded.
Such simplicity of design and use might lead one to expect an equally simple and straightforward history, one easily researched and explicated by a student doing a term paper. In the twenty-first century, such a student would very likely navigate around the World Wide Web via Google or some other digital search engine and come up with enough snippets to stitch together a plausible story–as long as the sources were unquestioned, the gaps glossed over, and the contradictions ignored. Of the quotations rustled up from the Web and corralled at the beginning of this book, every one but the statement about generating power from wood waste is at best a half-truth.
In fact, the full and true story of something even so simple as the toothpick cannot easily be gleaned from the Internet alone. Unfortunately, more traditional sources of information and scholarship, such as manuscripts, articles, books, and other written materials in archives and analog libraries, also often provide sparse, erroneous, and contradictory information for topics considered too banal for and thus neglected by scholars seeking to pursue grander things and themes.
The very simplicity and banality of the thing made the toothpick and its manufacture an artifact of tacit knowledge and trade secrets. Even in the late twentieth century, Japanese visitors who showed up at a Maine toothpick factory were turned away, lest they see the tricks of the trade. An American scholar, who should hardly have been seen as a potential competitor, was similarly denied entrance to a Minnesota counterpart. He had to go to Sweden to see some toothpicks being made.
Secrecy coupled with a dearth of reliable, confirmable documentary material makes the task of uncovering the real story of a common object a challenge for ordinary scholarship relying on the usual scholarly sources. But there are other sources of information, not least of which is the artifact itself and the documented social and cultural context in which it has been made and used. Much of the story of the toothpick must be coaxed out of the thing itself and its milieu. With patience, slivers of it can be teased out of even a closed box of toothpicks the way a stubborn seed eventually can be dislodged from between the teeth. Insights into the use and misuse of things can be gleaned from both the froth and the detritus of society.
Whatever its history, the toothpick-manufacturing process has become so automated and efficient that no human hand touches the product until it is taken up to be used. An antiseptic toothpick costs but a fraction of a fraction of a cent, and it can be tossed away after a single use. Since it is made of untreated wood, the biodegradable toothpick presents no substantial danger to the environment. At first glance, it seems not easily implicated in global warming–until we remember that trees have been sacrificed for and energy consumed in its production.
But as neglected, small, insignificant, and inconsequential as the artifact might seem to be, the story of the toothpick holds great potential for revealing often hidden and frequently overlooked relationships among the people and things of the world. As Archimedes asserted that, if he were given a long enough lever and a place on which to stand, he could move the earth, so we can imagine that, given a toothpick and a sense of its place in history, we can nudge our understanding of technology and culture a bit farther.
Since the toothpick is a technological and cultural artifact, its use and significance are determined by its producers and consumers as they have over time been embedded in the life of business and the business of life. Individuals can develop a dependency on toothpicks, a preference for certain shapes and sizes, and a set of habits and rituals surrounding their use. Society, ever subject to the fads and fashions that it itself creates, imposes changing expectations on the availability of toothpicks and on the manner and acceptability of their use. Different classes of people, being attuned to different social rhythms and cultural clocks, develop different relationships with toothpicks. This is naturally part of the story.
Because common things so easily transcend limits of time and place, their story is not readily confined to a single period or to a single culture. The history of the toothpick is as old as mankind and as universal as eating. Its story knows no disciplinary bounds, and it is revealed in the records of anthropology as surely as in the annals of etiquette. It is an international story, with chapters set in prehistoric Africa, ancient Greece and Rome, medieval Portugal, and modern Brazil, China, Japan, Sweden, and the United States, to name but a few of its backdrops. The story of the toothpick is the story of Everyone and Everything at Everytime.
Things get their names and reputations from people, and it is people who also dictate how things are spoken of and used. As much as its name defines a single intended purpose, the toothpick has been adapted to countless other uses. Like any tool or device, the toothpick has been called into service when something else was not available or suitable to the task at hand. This, too, is part of the story of the thing, as is its propensity to spawn an infrastructure of boxes, cases, dispensers, holders, and other contraptions that can be as extraordinarily diverse and complex as the one-part machine that they support is simple.
To an engineer, the challenge of mass-producing something like a toothpick with sufficient efficiency that it can be sold at a profit holds a special fascination. The origins and rise of the mechanized toothpick industry in the latter half of the nineteenth century make for a fascinating chapter in the history of manufacturing, as do the human stories of inventors and innovators such as Benjamin Franklin Sturtevant and Charles Forster, along with their inventions, their patents and patent rights, and their struggles through failures on their way to achieving successes. It is in this chapter of the story that the history of the modest toothpick assumes heroic proportions and provides especially poignant lessons for the technological enterprises of today and tomorrow.
Chapter One: The Oldest Habit
Nothing can be more annoying than having a piece of food stuck between our teeth. As tiny as it might really be, in time it can seem to grow out of all proportion to its place in the mouth. As the pea under the princess’s mattress prevented her from enjoying a night’s sleep, so a tiny seed between molars can deny the diner much-anticipated postprandial peace and satisfaction. Like a grain of sand between two millstones, the foreign matter grates on us until it is worked free.
We have all devised our own preferred methods for dealing with the problem, but when we are not alone some of us may be constrained by social strictures to work within a closed mouth. Our tongue is often the instrument of choice, but the tongue’s soft, blunt tip is usually ineffective. We have to flex and strain the muscles that harden and point it, and the process can be excruciatingly trying, tiring, and not really so private or inconspicuous as we might wish.
When wooden matches were commonly found near the kitchen stove, they were convenient to be split or whittled into toothpicks. One uninhibited character in a 1920s novel entered a shop “still helping the breadcrust out of his teeth . . . with his tongue,” supplemented by a split matchstick, which was a sure giveaway of his plight.[1] However, even without opening our mouth to use a pointed tool, whenever we proceed to drag the tongue across and thrust it between our teeth at a repast’s tenacious residue, we reveal our mission by the bulge moving around our lips and cheeks like a mole beneath the lawn.
Sucking at the stuck debris can sometimes be effective, but not always easily for stubborn little things. It takes more than eight pages in James Joyce’s A Portrait of the Artist as a Young Man, involving “sucking at a crevice in his teeth,” among other efforts, for the character Cranly to dislodge fig seeds.[2] We can also try squirting saliva between the teeth to flush out some unfriendly food debris. However, like vacuuming a rug or washing windows with a water hose, such actions can be noisy. The overzealous tooth sucker whose lips slip apart can sound like a wet kisser bussing the air, the too-eager spit squisher like someone squeezing a wet sponge.
The finger can be an effective lever to move what will not otherwise budge, but in many circles its use points to the defeat of other means. Besides, like the tongue, the finger is usually too blunt an instrument for the task at hand, and some people have been known to “grow a long finger nail especially for picking teeth.”[3] Sometimes, even an ordinary fingernail can be enlisted successfully, but implementing it as a solution can seldom be done with grace.
The most common alternative to natural and self-contained means is, of course, the familiar wooden toothpick. Where social strictures do not censure its use, the toothpick can be a most effective tool to succeed where tongue and fingers fail. As all tools are extensions of our bodies and their extremities, so the toothpick is an extension of the finger. It allows us to reach into the back of our mouth more easily and effectively, a need that has existed coevally with the need for food itself. Indeed, it has been suggested that “the ability to sense and remove food particles between teeth” dates from a couple million years ago, and that toothpicking represents “the earliest currently known nonlithic tool use by hominids.”[4] Hence, picking one’s teeth is believed to be the oldest human habit.[5]
The evidence comes from fossilized teeth, which have been called “the most durable relics of early life,” certainly outlasting any toothpicks that may have been used on them.[6] Unlike stone tools, implements made of grass, thorn, wood, or other vegetable materials would decay or erode over time, leaving no artifacts recognizable as toothpicks. However, for nearly a century, anthropologists around the world have noted curious striated grooves on fossilized teeth from a large number of diverse locations and covering a great span of time. As early as 1911, a French anthropologist described grooved teeth found at the La Quina Neanderthal site and proposed the hypothesis that it was the use of abrasive toothpicks that caused the grooves.[7] Subsequently, similarly grooved teeth have been found among the remains of Australian Aborigines, North American Indians, Canary Islanders, and Upper Dynastic Egyptians, as well as other populations.[8] The oldest examples of such grooving have been found in Africa. A tooth from the Olduvai Gorge archeological site in Tanzania “bears a series of tiny parallel lines scraped by a sharp, thin object pushed into the narrow space between teeth.”[9] An example from the Ethiopian site Omo has been estimated to be almost two million years old.[10]
It has been speculated that the use of toothpicks may have commenced with meat eating among early hominids, and that “the intent of primitive man was by no means the artificial cleaning of his teeth but simply the removal of an unpleasant subjective sensation.”[11] Even today, after ages of evolution, our teeth are still “not well designed for eating meat,” as those of us who are not vegetarians know all too well.[12] It is stringy pieces of meat that can be the most difficult to remove from their lodging place. Still, that the grooves in fossilized teeth were due to toothpick use has been debated among anthropologists, some of whom did not believe that simply picking food particles from between the teeth, even over a lifetime of eating, could cause such distinct grooves, some of which are as much as two millimeters wide.[13]
To produce such damage, it has been believed, there would have to be the prolonged working back and forth of a toothpick or toothpick-like device. One theory was that toothpicks were used not simply to remove bits of food but to serve the therapeutic and palliative function of easing the pain of periodontal disease and dental caries. Extended use might have worn away the decay and left a clean groove. Regular toothpick use may have caused the triangular opening bounded by neighboring teeth and gums to grow, thereby allowing more food to become impacted in the space, thus requiring further probing. Sensitive gums might have encouraged prolonged toothpick use, which might also have resulted in grooving.[14] It has even been proposed that the practice “may have been a largely unnecessary, non-functional pastime that was cultural rather than practical.”[15] Whatever its cause or motivation, the grooving of teeth appears to have been ubiquitous.[16]
NOTES
[1] Hugh de Selincourt, The Cricket Match (Oxford: Oxford University Press, 1924), quoted in M. E. Richardson, “In Sickness and in Health,” British Dental Journal, no. 9 (2004), 583.
[2] James Joyce, A Portrait of the Artist as a Young Man (New York: Viking Press, 1956), 215, 229-35, 247.
[3] Mary Joe Clendenin, “People and Toothpicks Make History,” http://www.our-town.com/editorials/Edge-Clendenin/edgepicks.htm (Apr. 5, 2006).
[4] William A. Agger, Timothy L. McAndrews. and John A. Hlaudy, “On Toothpicking in Early Hominids,” Current Anthropology 45, no. 3 (2004), 403-4.
[5] See, e.g. Christy G. Turner II, “Interproximal Grooving of Teeth: Additional Evidence and Interpretation,” Current Anthropology 29, no. 4 (1988), 664-65.
[6] John Noble Wilford, “But Did They Floss?” New York Times, Mar. 7, 1989, C1.
[7] A Siffre, “Notre sur une usure spéciale des molaires du squelette de la Quina,” Bulletin de la Societé Préhistorique Française 8 (1911), 741-43.
[8] See Christy G. Turner II and Eric Cacciatore, “Interproximal Tooth Grooves in Pacific Basin, East Asian, and New World Populations,” Anthropological Science 106, supp. (1988), 85-94; Douglas H. Ubelaker, T. W. Phenice, and William M. Bass, “Artificial Interproximal Grooving of the Teeth in American Indians,” American Journal of Physical Anthropology 30 (1969), 145-50; K. M. Reese, “Toothpicks May Have Been Among Humans’ Early Tools,” Chemical and Engineering News, Mar. 27, 1989, 48.
[9] “First Pick,” New Scientist, Apr. 22, 2000, 19.
[10] See, e.g., Paul G. Bahn, “Early Teething Troubles,” Nature 337 (Feb. 23, 1989), 693.
[11] “Ancient Toothpicks Point to Evidence of Early Meat-Eating Hominids,” Journal of Dental Technology 17, no. 5 (2000), 27; Irwin D. Mandel, “Why Pick on Teeth?” Journal of the American Dental Association 121 (Jul. 1990), 129.
[12] Peter Ungar, quoted in “Ancient Toothpicks,” 27.
[13] Ubelaker, Phenice, and Bass, “Artificial Interproximal Grooving,” 145.
[14] Ibid., 147. See also Vincenzo Fromincola, “Interproximal Grooving of Teeth: Additional Evidence and Interpretation,” Current Anthropology 29, no. 4 (Aug.—Oct. 1988), 663-64.
[15] See Bahn, “Early Teething Troubles.”
[16] Robert B. Eckhardt and Andrea L. Piermarini, “Interproximal Grooving of Teeth: Additional Evidence and Interpretation,” Current Anthropology 29, no. 4 (Aug.—Oct. 1988), 668.
From the Hardcover edition.
The plain wooden toothpick, it may be argued, is among the simplest of manufactured things. It consists of a single part, made of a single material, intended for a single purpose–from which it gets its simple name. It is also among the most convenient and ready of things. It can be used directly out of the box–there being no instructions to read, no parts to assemble, no priming or booting required, and no maintenance expected. When it has served its purpose, it is simply discarded.
Such simplicity of design and use might lead one to expect an equally simple and straightforward history, one easily researched and explicated by a student doing a term paper. In the twenty-first century, such a student would very likely navigate around the World Wide Web via Google or some other digital search engine and come up with enough snippets to stitch together a plausible story–as long as the sources were unquestioned, the gaps glossed over, and the contradictions ignored. Of the quotations rustled up from the Web and corralled at the beginning of this book, every one but the statement about generating power from wood waste is at best a half-truth.
In fact, the full and true story of something even so simple as the toothpick cannot easily be gleaned from the Internet alone. Unfortunately, more traditional sources of information and scholarship, such as manuscripts, articles, books, and other written materials in archives and analog libraries, also often provide sparse, erroneous, and contradictory information for topics considered too banal for and thus neglected by scholars seeking to pursue grander things and themes.
The very simplicity and banality of the thing made the toothpick and its manufacture an artifact of tacit knowledge and trade secrets. Even in the late twentieth century, Japanese visitors who showed up at a Maine toothpick factory were turned away, lest they see the tricks of the trade. An American scholar, who should hardly have been seen as a potential competitor, was similarly denied entrance to a Minnesota counterpart. He had to go to Sweden to see some toothpicks being made.
Secrecy coupled with a dearth of reliable, confirmable documentary material makes the task of uncovering the real story of a common object a challenge for ordinary scholarship relying on the usual scholarly sources. But there are other sources of information, not least of which is the artifact itself and the documented social and cultural context in which it has been made and used. Much of the story of the toothpick must be coaxed out of the thing itself and its milieu. With patience, slivers of it can be teased out of even a closed box of toothpicks the way a stubborn seed eventually can be dislodged from between the teeth. Insights into the use and misuse of things can be gleaned from both the froth and the detritus of society.
Whatever its history, the toothpick-manufacturing process has become so automated and efficient that no human hand touches the product until it is taken up to be used. An antiseptic toothpick costs but a fraction of a fraction of a cent, and it can be tossed away after a single use. Since it is made of untreated wood, the biodegradable toothpick presents no substantial danger to the environment. At first glance, it seems not easily implicated in global warming–until we remember that trees have been sacrificed for and energy consumed in its production.
But as neglected, small, insignificant, and inconsequential as the artifact might seem to be, the story of the toothpick holds great potential for revealing often hidden and frequently overlooked relationships among the people and things of the world. As Archimedes asserted that, if he were given a long enough lever and a place on which to stand, he could move the earth, so we can imagine that, given a toothpick and a sense of its place in history, we can nudge our understanding of technology and culture a bit farther.
Since the toothpick is a technological and cultural artifact, its use and significance are determined by its producers and consumers as they have over time been embedded in the life of business and the business of life. Individuals can develop a dependency on toothpicks, a preference for certain shapes and sizes, and a set of habits and rituals surrounding their use. Society, ever subject to the fads and fashions that it itself creates, imposes changing expectations on the availability of toothpicks and on the manner and acceptability of their use. Different classes of people, being attuned to different social rhythms and cultural clocks, develop different relationships with toothpicks. This is naturally part of the story.
Because common things so easily transcend limits of time and place, their story is not readily confined to a single period or to a single culture. The history of the toothpick is as old as mankind and as universal as eating. Its story knows no disciplinary bounds, and it is revealed in the records of anthropology as surely as in the annals of etiquette. It is an international story, with chapters set in prehistoric Africa, ancient Greece and Rome, medieval Portugal, and modern Brazil, China, Japan, Sweden, and the United States, to name but a few of its backdrops. The story of the toothpick is the story of Everyone and Everything at Everytime.
Things get their names and reputations from people, and it is people who also dictate how things are spoken of and used. As much as its name defines a single intended purpose, the toothpick has been adapted to countless other uses. Like any tool or device, the toothpick has been called into service when something else was not available or suitable to the task at hand. This, too, is part of the story of the thing, as is its propensity to spawn an infrastructure of boxes, cases, dispensers, holders, and other contraptions that can be as extraordinarily diverse and complex as the one-part machine that they support is simple.
To an engineer, the challenge of mass-producing something like a toothpick with sufficient efficiency that it can be sold at a profit holds a special fascination. The origins and rise of the mechanized toothpick industry in the latter half of the nineteenth century make for a fascinating chapter in the history of manufacturing, as do the human stories of inventors and innovators such as Benjamin Franklin Sturtevant and Charles Forster, along with their inventions, their patents and patent rights, and their struggles through failures on their way to achieving successes. It is in this chapter of the story that the history of the modest toothpick assumes heroic proportions and provides especially poignant lessons for the technological enterprises of today and tomorrow.
Chapter One: The Oldest Habit
Nothing can be more annoying than having a piece of food stuck between our teeth. As tiny as it might really be, in time it can seem to grow out of all proportion to its place in the mouth. As the pea under the princess’s mattress prevented her from enjoying a night’s sleep, so a tiny seed between molars can deny the diner much-anticipated postprandial peace and satisfaction. Like a grain of sand between two millstones, the foreign matter grates on us until it is worked free.
We have all devised our own preferred methods for dealing with the problem, but when we are not alone some of us may be constrained by social strictures to work within a closed mouth. Our tongue is often the instrument of choice, but the tongue’s soft, blunt tip is usually ineffective. We have to flex and strain the muscles that harden and point it, and the process can be excruciatingly trying, tiring, and not really so private or inconspicuous as we might wish.
When wooden matches were commonly found near the kitchen stove, they were convenient to be split or whittled into toothpicks. One uninhibited character in a 1920s novel entered a shop “still helping the breadcrust out of his teeth . . . with his tongue,” supplemented by a split matchstick, which was a sure giveaway of his plight.[1] However, even without opening our mouth to use a pointed tool, whenever we proceed to drag the tongue across and thrust it between our teeth at a repast’s tenacious residue, we reveal our mission by the bulge moving around our lips and cheeks like a mole beneath the lawn.
Sucking at the stuck debris can sometimes be effective, but not always easily for stubborn little things. It takes more than eight pages in James Joyce’s A Portrait of the Artist as a Young Man, involving “sucking at a crevice in his teeth,” among other efforts, for the character Cranly to dislodge fig seeds.[2] We can also try squirting saliva between the teeth to flush out some unfriendly food debris. However, like vacuuming a rug or washing windows with a water hose, such actions can be noisy. The overzealous tooth sucker whose lips slip apart can sound like a wet kisser bussing the air, the too-eager spit squisher like someone squeezing a wet sponge.
The finger can be an effective lever to move what will not otherwise budge, but in many circles its use points to the defeat of other means. Besides, like the tongue, the finger is usually too blunt an instrument for the task at hand, and some people have been known to “grow a long finger nail especially for picking teeth.”[3] Sometimes, even an ordinary fingernail can be enlisted successfully, but implementing it as a solution can seldom be done with grace.
The most common alternative to natural and self-contained means is, of course, the familiar wooden toothpick. Where social strictures do not censure its use, the toothpick can be a most effective tool to succeed where tongue and fingers fail. As all tools are extensions of our bodies and their extremities, so the toothpick is an extension of the finger. It allows us to reach into the back of our mouth more easily and effectively, a need that has existed coevally with the need for food itself. Indeed, it has been suggested that “the ability to sense and remove food particles between teeth” dates from a couple million years ago, and that toothpicking represents “the earliest currently known nonlithic tool use by hominids.”[4] Hence, picking one’s teeth is believed to be the oldest human habit.[5]
The evidence comes from fossilized teeth, which have been called “the most durable relics of early life,” certainly outlasting any toothpicks that may have been used on them.[6] Unlike stone tools, implements made of grass, thorn, wood, or other vegetable materials would decay or erode over time, leaving no artifacts recognizable as toothpicks. However, for nearly a century, anthropologists around the world have noted curious striated grooves on fossilized teeth from a large number of diverse locations and covering a great span of time. As early as 1911, a French anthropologist described grooved teeth found at the La Quina Neanderthal site and proposed the hypothesis that it was the use of abrasive toothpicks that caused the grooves.[7] Subsequently, similarly grooved teeth have been found among the remains of Australian Aborigines, North American Indians, Canary Islanders, and Upper Dynastic Egyptians, as well as other populations.[8] The oldest examples of such grooving have been found in Africa. A tooth from the Olduvai Gorge archeological site in Tanzania “bears a series of tiny parallel lines scraped by a sharp, thin object pushed into the narrow space between teeth.”[9] An example from the Ethiopian site Omo has been estimated to be almost two million years old.[10]
It has been speculated that the use of toothpicks may have commenced with meat eating among early hominids, and that “the intent of primitive man was by no means the artificial cleaning of his teeth but simply the removal of an unpleasant subjective sensation.”[11] Even today, after ages of evolution, our teeth are still “not well designed for eating meat,” as those of us who are not vegetarians know all too well.[12] It is stringy pieces of meat that can be the most difficult to remove from their lodging place. Still, that the grooves in fossilized teeth were due to toothpick use has been debated among anthropologists, some of whom did not believe that simply picking food particles from between the teeth, even over a lifetime of eating, could cause such distinct grooves, some of which are as much as two millimeters wide.[13]
To produce such damage, it has been believed, there would have to be the prolonged working back and forth of a toothpick or toothpick-like device. One theory was that toothpicks were used not simply to remove bits of food but to serve the therapeutic and palliative function of easing the pain of periodontal disease and dental caries. Extended use might have worn away the decay and left a clean groove. Regular toothpick use may have caused the triangular opening bounded by neighboring teeth and gums to grow, thereby allowing more food to become impacted in the space, thus requiring further probing. Sensitive gums might have encouraged prolonged toothpick use, which might also have resulted in grooving.[14] It has even been proposed that the practice “may have been a largely unnecessary, non-functional pastime that was cultural rather than practical.”[15] Whatever its cause or motivation, the grooving of teeth appears to have been ubiquitous.[16]
NOTES
[1] Hugh de Selincourt, The Cricket Match (Oxford: Oxford University Press, 1924), quoted in M. E. Richardson, “In Sickness and in Health,” British Dental Journal, no. 9 (2004), 583.
[2] James Joyce, A Portrait of the Artist as a Young Man (New York: Viking Press, 1956), 215, 229-35, 247.
[3] Mary Joe Clendenin, “People and Toothpicks Make History,” http://www.our-town.com/editorials/Edge-Clendenin/edgepicks.htm (Apr. 5, 2006).
[4] William A. Agger, Timothy L. McAndrews. and John A. Hlaudy, “On Toothpicking in Early Hominids,” Current Anthropology 45, no. 3 (2004), 403-4.
[5] See, e.g. Christy G. Turner II, “Interproximal Grooving of Teeth: Additional Evidence and Interpretation,” Current Anthropology 29, no. 4 (1988), 664-65.
[6] John Noble Wilford, “But Did They Floss?” New York Times, Mar. 7, 1989, C1.
[7] A Siffre, “Notre sur une usure spéciale des molaires du squelette de la Quina,” Bulletin de la Societé Préhistorique Française 8 (1911), 741-43.
[8] See Christy G. Turner II and Eric Cacciatore, “Interproximal Tooth Grooves in Pacific Basin, East Asian, and New World Populations,” Anthropological Science 106, supp. (1988), 85-94; Douglas H. Ubelaker, T. W. Phenice, and William M. Bass, “Artificial Interproximal Grooving of the Teeth in American Indians,” American Journal of Physical Anthropology 30 (1969), 145-50; K. M. Reese, “Toothpicks May Have Been Among Humans’ Early Tools,” Chemical and Engineering News, Mar. 27, 1989, 48.
[9] “First Pick,” New Scientist, Apr. 22, 2000, 19.
[10] See, e.g., Paul G. Bahn, “Early Teething Troubles,” Nature 337 (Feb. 23, 1989), 693.
[11] “Ancient Toothpicks Point to Evidence of Early Meat-Eating Hominids,” Journal of Dental Technology 17, no. 5 (2000), 27; Irwin D. Mandel, “Why Pick on Teeth?” Journal of the American Dental Association 121 (Jul. 1990), 129.
[12] Peter Ungar, quoted in “Ancient Toothpicks,” 27.
[13] Ubelaker, Phenice, and Bass, “Artificial Interproximal Grooving,” 145.
[14] Ibid., 147. See also Vincenzo Fromincola, “Interproximal Grooving of Teeth: Additional Evidence and Interpretation,” Current Anthropology 29, no. 4 (Aug.—Oct. 1988), 663-64.
[15] See Bahn, “Early Teething Troubles.”
[16] Robert B. Eckhardt and Andrea L. Piermarini, “Interproximal Grooving of Teeth: Additional Evidence and Interpretation,” Current Anthropology 29, no. 4 (Aug.—Oct. 1988), 668.
From the Hardcover edition.
Excerpted from The Toothpick: Technology and Culture by Henry Petroski
All rights reserved by the original copyright owners. Excerpts are provided for display purposes only and may not be reproduced, reprinted or distributed without the written permission of the publisher.
Please wait while the item is added to your bag...
© Copyright 1999-2013 | A Book Company, LLC. | Privacy Policy