. Horses' teeth: a treatise on their mode of development, anatomy, microscopy, pathology, and dentistry; compared with the teeth of many other land and marine animals, both living and extinct ; with a vocabulary and copious extracts from the works of odontologists and veterinarians. ion thetemporary tushes. A few odontologists, however, havedescribed them. Prof. Owen ( Odontography, vol. i,p. 580) says the small deciduous canine is cut aboutthe sixth month, at the time the third or corner inci-sors are cut. The lower tush, owing to its diminutivesize, and its being so close to the incisor, is
. Horses' teeth: a treatise on their mode of development, anatomy, microscopy, pathology, and dentistry; compared with the teeth of many other land and marine animals, both living and extinct ; with a vocabulary and copious extracts from the works of odontologists and veterinarians. ion thetemporary tushes. A few odontologists, however, havedescribed them. Prof. Owen ( Odontography, vol. i,p. 580) says the small deciduous canine is cut aboutthe sixth month, at the time the third or corner inci-sors are cut. The lower tush, owing to its diminutivesize, and its being so close to the incisor, is shedalmost as soon as the crown of the contiguous incisoris in full place, being carried out by the same move- 52 ¥HE TEMPORARY DEtfTtfiOtf. ment. Bojanus,* Prof. Owen says, first drew theattention of veterinary authors to it by his memoir<De Dentibus Caninis Caducis/ &c. Bojanus Deverfound the lower deciduous canine retained beyond the•first year. The deciduous canine of the upper jaw,being developed at a short distance behind the incisors,is less disturbed by the eruption of the outer incisor,but is nevertheless shed in the course of the secondyear. The deciduous canines appear from Campers fobservations to retain their place longer in the zebrathan in the D. C—deciduous canines ; natural size at about the seventh month. Thespecimen is from the collection of Dr. Richard A. Finlay, of New also has an excellent specimen showing the canines at birth, peepingthrough the bone, as it were. The deciduous canines appear to be as natural teeth as theincisors, but they are so small that they usually escape obser-vation, and are besides easily lost. Prof. Tomes truly saysthey are rudimentary. Owen, Tomes, Frothomme, andRigot, as well as Bojanus and Camper, recognize them asteeth, but Lecoq does not. The latter compares them to asmall spicula or point, but admits that they are shed, whichlatter fact is prima facie evidence of his error. * Nova Acta Nat. Curios., t
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisher, booksubjecthorses
