374 Recent Literature. [ April, 
Some typographical errors are not corrected in the errata, this 
is probably due to the fact that the printing was done mostly 
during the summer while the author was in the field, while a 
large amount of proof was sent to Mexico and there lost. 
The present volume is divided into two parts, Part 1 relating to 
the Puerco, Wasatch and Bridger faune (Eocene); and Part 1 
comprising the White River and John Day faunz, Lower and 
Middle Miocene. Vol. 1v is in preparation and will comprise the 
Upper Miocene fauna (Ticholeptus and Loup Fork fauna) and the 
Pliocene. 
The introduction is divided into two sections, in the first of 
which the character and distributions of the Tertiary formations 
of the central region of the United States are noticed, In the 
second section are discussed the horizontal relations of the 
orth American Tertiaries with those of Europe. 
Then follow the description of the fossils, beginning with the 
fishes and ending with the mammals. 
The general conclusions as to affinities and phylogeny are 
appearing in the NATURALIST in a series of articles which began 
two years ago. 
The work is richly illustrated, the details amply supplementing 
the descriptions. As the result of extended investigations by an 
experienced comparative anatomist and morphologist, as well as 
palzontologist, this and the preceding volumes mark an epoch in 
American paleontology. It isa monument of energy and devo- 
tion to science, signalizing the triumphs of severe and trying 
physical labor in the field, as well as patient, comprehensive and 
searching work in the laboratory and study. 
Craus’ ELEMENTARY TEXT-B00K oF Zootocy.!— The larger 
work of Professor Claus is the latest and most authoritative trea- 
tise on systematic zodlogy, having passed through four editions. 
This work, somewhat cut down in size, is the original of the 
present one. As it is, the first part is a bulky octavo, and, as 
when completed it will be in two volumes, the book will not be 
so easy of reference as if it formed a single volume. The boo 
in its English dress is richly illustrated, the cuts, for the most 
part, carefully prepared, mostly selected by Dr. Claus himself. 
To the general part are devoted 179 pages; the usual subjects of 
organic and inorganic bodies, animals and plants, cells and tissues, 
correlation of organs, accounts of the different organs, intelli- 
gence and instinct, development and evolution receiving full and 
accurate treatment, though the author’s style is at times heavy 
and prolix, the translators not always adding perspicuity or ele- 
gance to the cumbrous German expressions. For example, on 
1 Elementary Text-book of Zočlogy. ta ial part ; Protozoa to 
Insecta. By Dr. C: oe iat et raken by Apan Sebo, with the 
schein & Co., Paternoster square, 1884. Svo, pp. 615. 
