210 



SCIENCE 



[N. S. Vol. XL. No. 1023 



of the region resorted, as in South Africa at 

 the present time herds of ungulates resort to 

 such places. ... At these pools the beasts, 

 which roamed over the wide plain, came to 

 drink, and here they died, as the result of age, 

 or as they fell under the teeth and claws of 

 oarnivora. It may also have been . . . that 

 at this particular point there was a ford, or 

 crossing of the river, much resorted to by mi- 

 grating herds of animals, and here many, 

 especially younger animals, were mired in 

 quicksands, and drowned." 



Chapter I. defines the Chalicotheroidea, 

 sketches briefly the literary history of the 

 group, and names and defines the three sub- 

 families, Schizotheriinse, Moropodinffi and 

 Macrotheriinse ; while Chapter II. character- 

 izes the various genera included under each 

 subfamily, both the American and Old World 

 forms, as well as several genera formerly in- 

 cluded under the Chalicotheroidea but now 

 referred to other orders and suborders. 



In Chapter III. a resume of the species is 

 given, although, with the Old World types 

 especially, a thorough revision other than of 

 the genotypes was not practicable; at the same 

 time the comprehensive list is of great value 

 for future work. Chapter IV. treats very 

 fully each species of the genus Moropus, dis- 

 cussing each one under the several headings of 

 name and synonyms, of what the type consists 

 and its whereabouts, the geological horizon, 

 and the specific characters. The last named 

 includes not only the original description 

 quoted in full, but an adequate supplemental 

 description as well. 



Chapter V., embracing as it does 143 pages, 

 is really the piece de resistance of the entire 

 volume, and presents 'an elaborate morpholog- 

 ical study of Moropus, based very largely upon 

 the skeleton of M. elaius already referred to, 

 which has been mounted in the Carnegie Mu- 

 seum. The assembled skeleton shows certain 

 horse-, rhinoceros- and titanothere-like fea- 

 tures, while the feet are so like those of the 

 Edentata as to have been the cause of the in- 

 clusion of Moropus in that order before the 

 association with other anatomical features 

 was known. The restoration of Moropus 



based upon the articulated skeleton is given 

 in the form of a statuette prepared by Theo- 

 dore A. Mills under the supervision of the au- 

 thors, and presents a curious admixture of 

 horse-like head, tapir-like body, and leonine 

 feet. Of its probable habits and the meaning 

 of the peculiar adaptive features the authors 

 are perhaps wisely silent, though a host of 

 questions (present themselves upon viewing 

 this grotesque re-creation. 



Chapter VI. gives an elaborately studied 

 bibliography, in which the essential facts of 

 each paper are analyzed, showing a very inti- 

 mate knowledge of the literature of the sub- 

 ject on the part of the authors. 



This work, on the whole, is entitled to the 

 highest commendation as an elaborate, pains- 

 taking piece of research which will prove of 

 the greatest value to future students of the 

 group, and the fine appearance of the volume 

 is fully commensurate with its importance. 



ElCHARD SWANN LULL 



Yale University 



Atlas und Leliriuch wichtiger tierischer Para- 

 siten und ihrer Uehertrdger mit hesonderer 

 BerilcTcsicMigung der Tropenpathologie. By 

 Prof. Dr. E. 0. Neumann (Bonn) and Dr. 

 Martin Mater (Hamburg). Lehmann's 

 Medizinische Atlanten. J. F. Lehmann's 

 Verlag in Miinchen. Ed. XL, vi+580 + 

 93 pp., 45 colored plates with 1,300 figures 

 and 237 figs, in text, 1914. Geb. M. 40. 

 The high standard of excellence established 

 in the previous volumes of Lehmann's series of 

 atlases, which includes, among other well-known 

 texts, Sobotta's superb work on anatomy and 

 histology, is well maintained in Neumann and 

 Mayer's recently published " Atlas und Lehr- 

 buch wichtiger tierischer Parasiten." The 

 rapid growth of interest in tropical diseases, 

 the recent expansion of the sciences of proto- 

 zoology and parasitology, the increasing num- 

 ber of institutions devoted to research in these 

 fields, and the rapid rise of applied hygiene 

 and preventive medicine, have created both the 

 possibility and the need for such a work as 

 this. One has but to glance through the group 



