THE MAMMALIA 



IN THEIR RELATION TO PRIMEVAL TIMES. 



Ey Professor OSCAR SCHMIDT, 

 Author of ••The Doctrine of Descent and Darwinism." 



With 51 Woodcuts ... - 12mo. Cloth., $1.50. 



" Profespor Schmidt was one of tie bept authorities on the subject which he 

 has here treated with the knowledL'e derived from the studies of ii iiletime. We 

 use the past Icnse in soealvini,' of him. berause, since this book was prii.ted, its 

 accomplished author has died in the fullness of his powers. Althou^ih he pre- 

 pared it Komiually for the use of advanced students, there are few if any pages 

 in his book which can not be readily nndersiooj by the oniinary reader. As 

 the title implies. Professor Schmidt has traced the iinks of connection between 

 existing mammalia and those types of which art; known to us only throuijh the 

 (liseliisi.res of ceoloiiy. Pifs, camels, deer, horses, ilephat.ts. whales, sea's, 

 anl apes, are a few of lh<^ chs e« whose development, step by step, is thus cai'c- 

 luUy shown."— Asm; Yorii Joumai <f Comma ce. 



"The author undertakes to trace the history of mammalia thronch all the 

 stages of their geolojrico-zoolopfical development. It is unnecessar\ to sny that 

 his line of speculation lakes him through many misty labyrinths of thoutrht. 

 While, however, the writer deals m.ucli With intricate hypotheses, he devotes 

 much space to the anatomical structure and other physical pecnliarities of tlie 

 mamninlia. This phase of his woik gives it value apart from his theory." — 

 2\'ew York Herald. 



" The work is an excellent and discriminating treatise ttpf^n one of the most 

 important branches of what is by far the inost stupenoous scientific problems 

 of the day. It is marked ly ripe scholarsliin. keen intuition into the value and 

 relations of lacts, and by that c'earness which can only reeult Irom a perfect 

 maetery of the subject on the part of the author." — Boston Courier. 



"The author presents this as furrisling 'proofs of tl.e ne(es^ity, the triith, 

 and the value of Darwinism as the foundation for the theory of descent.' within 

 the limited field desmbed by the title. The work is sni-pleraenial to the au- 

 thor's tri-atisc on the "Doctrine of Descent and Darwinism," published in the 

 same series, bnt it is complete in itself, and includes the results of the latest 

 Bcientitic research in this field." — BostOii Journal. 



"Professor Schmidt offers this work as 'a sngcestive introduction to that 

 portion of the animal kingdom which stai d" closest to anthropology.' He com- 

 pares in detail living matnmalia with their paieontolocrical ancestors, ))-iying 

 particular attention "(o the stinclure of the teeth. Professor Schmidt ass-erts 

 that ntan's teeth have decreased in number curing his developmeit, atid are 

 likelv to decrase in future. He believes ih.it man will retain his presi lit com- 

 plement of fingers and toes, but that the race will eventually become bald. The 

 work indicates minuteness of research, and the subject-matter is ably pre- 

 Benrei.''''— Albany Evening Jcurnal. 



"As presenting the results of a considerab'e amount of original work the 

 volume should meet with a wide welcome at the hands of students of natural 

 history as a science of divclopmcnt. It does not deal with (what huiran vanity 

 has chosen to call) the highest types of the aninial kingdom merely as subjects 

 for description, or even lor comparison with other forms, but considers them in 

 tlieir relations to surrounding facts. This inv Ives a study of the changes in 

 organism due to the alteration of thoce conditions through the lapse of geologic 

 time." — Chicago Tribune. 



" The history of the development of animals and the history ef the earth and 

 geocrraohy are made to confirm one another. The book is illusiiated with wood- 

 cuts which will prove both interesting and instructive. It tells of livir.g mam- 

 malia, piL'S. hippopotami, camels, deer, antelopes, oxen, rhinoceroses, forses, 

 elephants, sea-cows, whales, dogs, seals, insect-eaters, rodents, bats, semi apes, 

 apes and their ancestors, and the man of the inivLTs.''— Syracuse (N. Y.) Herald. 



New York : D. APPLETON & CO., 1, 3, & 6 Bond Street. 



