The Dental cosmos (1912) (14767050554)

Identifier: dentalcosmos5419whit (find matches)

Title: The Dental cosmos

Year: 1912 (1910s)

Authors: White, J. D McQuillen, J. H. (John Hugh), 1826-1879 Ziegler, George Jacob, 1821-1895 White, James William, 1826-1891 Kirk, Edward C. (Edward Cameron), 1856-1933 Anthony, L. Pierce (Lovick Pierce), b. 1877

Subjects: Dentistry Dentistry

Publisher: Philadelphia, S. S. White Dental Manufacturing Co

Contributing Library: Yale University, Cushing/Whitney Medical Library

Digitizing Sponsor: The College of Physicians of Philadelphia and the National Endowment for the Humanities

Text Appearing Before Image:

Right and left upper canines of a dog, showing extra canine on one side andpartially divided canine on the other. (After Bateson.) canine or a fifth premolar or molar in any Another important difficulty in the waymammal. The theory of atavism evi- of accepting this explanation is the fact Fig. 2.

Text Appearing After Image:

Supernumerary premolar on one side and partially divided premolar on the other, in a seal. (After Bateson.) dently fails to offer a general explanation that the supposed atavistic teeth are often covering all these cases, even if we assume not at all atavistic in appearance. They a reversion to the reptilian stage of evolu- may be the merest vestiges, as in the so- 1196 THE DENTAL COSMOS. called enamel dropsthey may be rudi- teeth of their respective series (incisor,mentary, as in the conical peg teeth; premolar, etc.), and of the species in Fig. 3.

стоматологический космос 1912 книжные иллюстрации здравоохранение лекарство медицинские иллюстрации стоматология изображения из интернет-архива

1912

The College of Physicians of Philadelphia and the National Endowment for the Humanities

http://commons.wikimedia.org/

public domain