EDITORS' PREFACE 



More than twenty years have elapsed since the original edition of Professor 

 von Zittel's Grundzilge der Paldontologie was published. During the. interval 

 no department of the science has made greater advances than that which deals 

 with fossil vertebrates, especially Mammals. The chapter treating of the 

 Mammalia in the Grundzuge was twice revised by the author during his 

 life -time, and the text was further enlarged by his colleague Dr. Max 

 Schlosser, custodian of the geological and palaeontological collections in the 

 Alte Akademie at Munich. 



The present version is a literal rendering into English of Dr. Schlosser's 

 revised account of the Mammalia, and the manuscript of the latter half of 

 the translation has been critically examined by him. Dr. Schlosser has also 

 supplied several new figures which do not appear in the earlier German 

 editions. 



The section comprising the Eplacentalia and the Placentalia onward as far 

 as the Perissodadyla, also the Notoungulata and a portion of the Subungulata, 

 has been translated by Miss Marguerite L. Engler, of New York, and the 

 remaining part, comprising about a hundred pages of text in the original, by 

 Miss Lucy P. Bush, formerly assistant to Professor 0. C. Marsh at New 

 Haven. The introductory pages were put in their present form by Professor 

 F. B. Loomis, Amherst College. The task of the Editor has been limited to a 

 supervision of the work and preparing the completed manuscript for printing. 



CHARLES R. EASTMAN. 



American Museum of Natural History, 

 New York, Feb. 1, 1916. 



The revision of this volume was unfortunately left unfinished by the death 

 of Dr. Eastman in 1918, and I have endeavoured to complete his work. With 

 the help of Baron Francis Nopcsa, I have compared the whole of the 

 English translation with the original German text, and made such emendations 

 as seemed necessary. I have also added the more important recent discoveries, 

 and have particularly extended the bibliographies with some references to the 

 later literature. 



A. SMITH WOODWARD. 



Hill Place, Hatwards Heath, 

 Sussex, A2Jril 30, 1925. 



