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	Academy of Natural Sciences - Joseph Leidy (Site not responding. Last check: 2007-10-21)
		Leidy was also the "Founder of American Parasitology," a Professor of Anatomy at the University of Pennsylvania, a pioneering protozoologists, an influential teacher of Natural History, an accomplished microscopist and scientific illustrator, and an expert on a variety of subjects encompasing the earth and natural sciences.
		Leidy was a passionate advocate of employing the microscope in scientific research.
		Leidy's microscopic studies also allowed him to debunk a popular theory that various respiratory diseases (including asthma and hay fever) were caused by an infusorian, Asthmatos ciliaris (2).
	www.ansp.org /museum/leidy (662 words)

	[No title]
		Joseph Leidy (1823-1891) changed that, and initiated a century and a half of work on American dinosaurs that transfigured dinosaurs, and made them the familiar animals that they are today.
		Leidy was first and foremost a professor of anatomy at the University of Pennsylvania in Philadelphia, but he also was an accomplished zoologist, parasitologist and mineralogist, and was a major figure at the Philadelphia Academy of Sciences.
		Leidy's first contribution to dinosaur paleontology was made in 1856, when he published a paper in which he described fossil teeth sent to him from Judith River, Montana, by F.V. Hayden, one of the early explorer-geologists of the American West, as being similar to the teeth of Iguanodon and Megalosaurus.
	academic.brooklyn.cuny.edu /geology/chamber/leidy.html (880 words)

	Joseph Leidy and 'Fresh-water Rhizopods of North America'
		Leidy came on the scene before the microscope was really regarded as a serious research instrument—but he made it so.
		Leidy's main mode of using the scope would have been normal Bright Field (BF) but he notes in 'Rhizopods' that he also used reflected light (courtesy of the mounted stage lens?), and would certainly have made use of the oblique features of the configurable mirror.
		Leidy's scope would have had to have been tough, able to be jostled and jolted at times, in a carriage, on a frontier train, packed on a mule into the 'high country', and set-up on a camp stool, rock, or tree trunk.
	www.microscopy-uk.org.uk /mag/artoct06/sn-leidy.html (2021 words)

	Joseph Leidy (Site not responding. Last check: 2007-10-21)
		"Joseph Leidy is best known for his study of the dinosaur Hadrosaurus foulkii, which greatly advanced knowledge of these prehistoric giants and placed the United States at the scientific forefront of vertebrate paleontology.
		Leidy's achievements and the breadth of his scientific interests and knowledge were astonishing.
		This is the first published biography of the remarkable Joseph Leidy--a leading American scientist of the mid-nineteenth century, the foremost human anatomist of his time, the first truly productive microscopist, the author of numerous groundbreaking scientific papers and books, and a devoted professor at the University of Pennsylvania and Swarthmore College.
	www.phthiraptera.org /phthirapterists/leidy/leidy.htm (302 words)

	Joseph Leidy - Wikipedia, the free encyclopedia
		Leidy was professor of anatomy at the University of Pennsylvania, and later was a professor of natural history at Swarthmore College.
		Leidy named the holotype specimen of Hadrosaurus foulkii, which was recovered from the marl pits of Haddonfield, New Jersey.
		Leidy was also a renowned parasitologist, and determined as early as 1846 that trichinosis was caused by a parasite in undercooked meat [1].
	en.wikipedia.org /wiki/Joseph_Leidy (216 words)

	Jointed threads: Joseph Leidy was the first to describe symbiotic bacteria growing together in long strings in animal ...
		Leidy was the first to observe our laboratory bacterium in its natural habitat, living in the intestines of animals.
		Leidy stays so close to his own data that to those today who are looking to the past for overarching theories or general principles, he seems to deal only with trivia.
		In spite of Leidy's wide-ranging interests and activities, he was never away from his first scientific passion for long: the study of the microcosm.
	www.findarticles.com /p/articles/mi_m1134/is_5_114/ai_n13811125 (946 words)

	Rocky Road: Joseph Leidy (via CobWeb/3.1 planetlab2.tamu.edu) (Site not responding. Last check: 2007-10-21)
		Virtually anonymous today, Joseph Leidy was one of the foremost American scientists of the 19th century.
		The transition was good for Leidy, the son of a sign painter, and good for science, too.
		In 1846, Leidy identified Trichina spiralis — the wormlike creature that caused the dangerous and sometimes fatal trichinosis — in pork.
	www.strangescience.net.cob-web.org:8888 /leidy.htm (430 words)

	Hadrosaurus.com -- Official Haddonfield Dinosaur Committee Site
		An 1858 photograph of Dr. Joseph Leidy and one of the giant Hadrosaurus bones excavated from a marl pit near Maple Avenue in Haddonfield.
		Foulke summoned Dr. Joseph Leidy to the scene to oversee the removal, preservation and interpretation of the fossilized remains.
		Leidy, a professor of anatomy and chairman of the Board of Curators of Philadelphia's Academy of Natural Sciences, was a leading expert in the emerging science of fossil studies.
	www.hadrosaurus.com /1858.shtml (467 words)

	Joseph Leidy
		LEIDY, Joseph, naturalist, born in Philadelphia, Pennsylvania, 9 September, 1823.
		Professor Leidy, in 1884, on the establishment of the department of biology in the University of Pennsylvania, became its director, which office he still fills.
		Professor Leidy obtained the Walker prize of $1,000 from the Boston society of natural history in 1880, and also the Lvell medal with the stun of £25 from the Geological society of London "in recognition of his valuable contributions to paleontology," and received in 1886 the degree of LL.
	www.famousamericans.net /josephleidy (625 words)

	[No title]
		Thomas Leidy, the younger brother of Joseph Leidy, was born in 1825.
		Philip Leidy, born in 1839, was a half brother of Joseph Leidy.
		Provenance The collection of Leidy family lecture admission cards was donated to the Library of the College of Physicians of Philadelphia as part of a larger gift by Joseph Leidy IV through George D. Gammon in September 1946.
	www.collphyphil.org /FIND_AID/hist/histlf1.htm (966 words)

	Amazon.com: Joseph Leidy: The Last Man Who Knew Everything: Books: Leonard Warren (Site not responding. Last check: 2007-10-21)
		Leidy's discovery in 1846 of Trichina larvae (the parasite that causes trichinosis in humans) in pigs earns Warren's accolade as a milestone in public health, yet, as Warren acknowledges, European biologists working out the life cycle of the parasite ignored Leidy's critical find.
		Although Leidy was a leading human anatomist, the founder of vertebrate paleontology, and considered the father of parasitology, he is little known today.
		Throughout the book the author laments the fact that Leidy was not an experimental biologist or theorist, and overlooks Leidy's talents as a descriptive biologist, geologist, and (what he is most known for) paleontologist.
	www.amazon.com /Joseph-Leidy-Last-Knew-Everything/dp/0300073593 (1356 words)

	The Scientist : Not Unknown After All These Years
		For those of us whose research is dependent on fossil vertebrates, Joseph Leidy is as well known today as any of the early founders of the fields in which we work (paleontology, anatomy, zoology, etc.).
		It makes me happy that the contributions of scientists such as Leidy are appreciated outside of their major fields.
		Leidy was certainly a giant and deserving of recognition by scientists in many fields, but most importantly paleontology and anatomy.
	www.the-scientist.com /article/display/14205 (150 words)

	Syaffolee
		Leidy was a naturalist of the nineteenth century--a passionate observationist and "the founder of American vertebrate paleontology, parasitology, and protozoology"--yet he has fallen into obscurity.
		Joseph Leidy's paper in 1891 was the first to describe the termite endosymbionts.
		Although Leidy deduced correctly that these protists were entirely dependent on the termite for providing a safe niche, he thought that these microbes were unnecessary for the termite.
	www.gamalei.net /syaffolee/2004/08/peering-inside-natures-nesting.html (716 words)

	Dinosaur Search @ Planet Dinosaur
		One leading student of fossils was Joseph Leidy of the Academy of Natural Sciences in Philadelphia, who named some of the earliest dinosaurs found in America, including Palaeoscincus, Trachodon, Troodon, and Deinodon.
		Leidy is perhaps best known for his study and description of the first dinosaur skeleton to be recognized in North America, that of a duckbill, or hadrosaur, found at Haddonfield, New Jersey, in 1858, which he named Hadrosaurus foulkii.
		Leidy's inference that this animal was probably amphibious influenced views of dinosaur life for the next century.
	planetdinosaur.com /dinosaurs/search_for_dinosaurs.htm (623 words)

	Samuel Stehman Haldeman
		Joseph Leidy would go on to become a famous naturalist, holding positions as the chair of the Anatomy and Biology departments at the University of Pennsylvania, as well as the chair of the natural history department at Swarthmore College.
		Still today, his name graces Philadelphia on the Joseph Leidy Building at the University of Pennsylvania, the Joseph Leidy Public School, and Leidy Avenue(13).
		Haldeman paved the way for Leidy in the scientific world both personally and professionally, and thus had a great secondary influence on the world of science after this death.
	chronicles.dickinson.edu /encyclo/h/haldeman.html (2185 words)

	The Wagner Free Institute of Science of Philadelphia - Museum - Joseph Leidy
		Leidy’s most lasting contribution to the Wagner was his reorganization of the Institute’s museum.
		Based on Darwinian principles of evolution, Leidy personally developed and supervised their reorganization into a systematic display in which specimens and cases were arranged so that visitors moved from simpler to more complex organisms and through geologic time as they walked through the exhibition.
		At its culmination is Man. With the transformation of the Wagner collections, Leidy moved the Institute to the forefront of scientific scholarship and of museum practices.
	www.wagnerfreeinstitute.org /museum_leidy.shtml (267 words)

	Of Worms, Legends, and the Last Man Who Knew Everything
		Joseph Leidy was Professor of Paleontology at the University of Pennsylvania for several decades in the 19th Century, and was the first person to discover dinosaur fossils in America.
		She saw nothing unusual about this; after all, in 1866 when she was born, most country folk still believed in Spontaneous Generation, the theory that lower animals were formed from non-living material.
		Leidy found that a worm six inches long laid a string of eggs that was over three times its body length and contained six million eggs.
	www.emmitsburgdispatch.com /2004/October/6/ecologist.shtml (1025 words)

	Cimoliasaurus
		Wherein Joseph Leidy describes and names the first two species of plesiosaurs found in the United States; Cimoliasaurus magnus from New Jersey and Discosaurus vetustus from Alabama.
		A saurian established upon thirteen vertebræ, apparently from one individual, found in the Green Sand of New Jersey, and preserved in the Museum of the Academy.
		Joseph Jones from the cretaceous formation of Alabama.
	www.oceansofkansas.com /Leidy1851.html (786 words)

	New Jersey Hadrosaurus, 1858 (Site not responding. Last check: 2007-10-21)
		The teeth identified by Joseph Leidy in 1856 were valid but scanty evidence of North American dinosaurs.
		Leidy recognized the fossils as belonging to a dinosaur like Iguanodon, and he named it Hadrosaurus foulkii, after the discoverer and benefactor.
		Leidy's 1858 paper was not illustrated, but in 1865 he published a large monograph that did contain a fairly complete series of plates depicting most of the hadrosaur bones.
	www.lhl.lib.mo.us /events_exhib/exhibit/exhibits/dino/lei1858.htm (155 words)

	History of Geology at PENN
		Hayden died in 1887 and was buried in Woodlands Cemetery, adjoining the University campus.
		Joseph Leidy, appointed Professor of Anatomy in the Medical School in 1853, laid the foundation of vertebratepaleontology in the United States.
		Distressed by the explosive politics of Hayden and caught in the crossfire of a violent feud between Cope and Marsh, Leidy gradually withdrew from vertebrate paleontology.
	www.sas.upenn.edu /geology/history.html (2011 words)

	Two Survivors : La Presse (1912) - 17 April 1912
		This afternoon, the Daily Mail welcomed in their Parisian offices, rue des Capucines, the American doctor Joseph Leidy.
		Leidy was visiting the Daily Mail reporters in order to show them a wireless he had just received from Philadelphia in which Mr.
		Leidy venait montrer à notre confrère une dépêche, qu’il venait de recevoir de Philadelphie, où M. et Mme W. Carter, passagers de première classe du Titanic, lui annonçaient laconiquement qu’ils étaient sains et saufs.
	www.encyclopedia-titanica.org /item/2710 (178 words)

	First Discovery of American Dinosaurs, 1856 (Site not responding. Last check: 2007-10-21)
		Hayden sent the specimens to Joseph Leidy, a physician and eminent naturalist of Philadelphia.
		Leidy recognized that some of these were the teeth of very large reptiles, and in this paper he identified and named eight genera, of which three turned out to be dinosaurs: Trachodon, Troodon, and Deinodon.
		Leidy truly understood what he had found; although his Trachodon was classified primarily on the basis of one tooth, Leidy observed that it was an animal similar to Iguanodon, and he commented that the Deinodon teeth, although fragmentary, resembled those of Megalosaurus.
	www.lhl.lib.mo.us /events_exhib/exhibit/exhibits/dino/lei1856.htm (231 words)

	[No title]
		Leidy received an M.D. from the University of Pennsylvania in 1844.
		Joseph Leidy became a Fellow of the College of Physicians of Philadelphia in 1851.
		Provenance The collection of Joseph Leidy papers was donated to the College of Physicians of Philadelphia as part of a larger gift by Joseph Leidy IV in September 1946.
	www.collphyphil.org /FIND_AID/hist/histjl1.htm (526 words)

	Leidy Portal
		I wrote an article for Micscape on Joseph Leidy and his 1879 masterpiece, 'Fresh-Water Rhizopods of North America'.
		Certainly it was of this vintage because Leidy first was introduced to the microscope by a colleague in 1841 and received his own instrument shortly after from his mother for his birthday.
		I figure that the $50 Beck's Economic Microscope Leidy mentions in the introduction to 'Rhizopods' would cost about $4000 USD today -- thus new, basic, scopes, from major manufacturers, have decreased in price to about 1/3rd or 1/4th of what they were in 1880.
	www.xmission.com /~psneeley/Personal/Leidy.htm (1014 words)

	Arthur W Bloom -Joseph Jefferson Dean of the American Theatre - Victoria Sherrow (Site not responding. Last check: 2007-10-21)
		Joseph Liouville 1809 - 1882 Master of Pure and Applied Mathematics Studies in the History of Mathematics and Physical Sciences Vol 15.
		Joseph Lindon Smith Paintings from Egypt - An Exhibition Brown University October 8 - November 21 1998.
		Joseph McCarthy and the Cold War Notorious Americans and Their Times.
	www.bookzsearch.com /213166joseph_jefferson_dean_american_theatre.html (79 words)

	Joseph Leidy (Site not responding. Last check: 2007-10-21)
		American Malacologists: A national register of professional and amateur malacologists and private shell collectors and biographies of early American mollusk workers born between 1618 and 1900.
		Other References: Chapman, H.C. Memoir of Joseph Leidy, M.D., LL.D. Proceedings of the Academy of Natural Sciences of Philadelphia 43(1891):342-388 + 1 plate.
		Leidy, J. On the reproduction of parasites of Anodonta fluviatilis.
	www.inhs.uiuc.edu /~ksc/Malacologists/LeidyJ.html (117 words)

	Dinosaurs of New Jersey
		Dr Joseph Leidy, also of the Academy, was brought in to study the find.
		But as Leidy pointed out, the small forelimbs and large rear leg bones were clearly those of a biped.
		A student of Leidy in Philadelphia, he became one of the most prominent paleontologists ever.
	mywebpages.comcast.net /exogyra/DINO.HTM (1189 words)

	Academy awards medal to noted expert in disappearing amphibians
		David Wake, professor of integrative biology and curator of herpetology at the University of California, Berkeley, will receive the Joseph Leidy Award at a free public lecture and ceremony at The Academy of Natural Sciences on Tuesday, Feb. 7.
		Established in 1923 in honor of Dr. Joseph Leidy (1823-1891), anatomist, paleontologist and Academy president, the award consists of a bronze medal and $5,000.
		Leidy helped popularize dinosaurs when he described the first dinosaur discovered in America, Hadrosaurus foulkii, which became the first mounted dinosaur when it went on display at the Academy in 1868.
	www.eurekalert.org /pub_releases/2006-01/taon-aam012306.php (452 words)

	Paleontologists - AllAboutDinosaurs.com
		Joseph Leidy (1823-1891) was a US anatomist/paleontologist who named the first dinosaurs found in the U.S.A. He excavated the first American dinosaur, Hadrosaurus, in 1858.
		Leidy named Antrodemus (1870, perhaps Allosaurus), Aublysodon (1868), Deinodon (1856), Diplotomodon (1868), Hadrosaurus (the first nearly-complete dinosaur skeleton and first-known duck-billed dinosaur, 1858), Palaeoscincus (1856), Thespesius (1856), Trachodon (1856), and Troodon (1856).
		Leidy was also the first scientist to identify many extinct species of camels, horses, sloths, tigers, and rhinoceroses.
	www.enchantedlearning.com /subjects/dinosaurs/glossary/Paleontologists.shtml (5238 words)

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