Seal NCE 
NEw SERIES O SINGLE CoPizs, 15 Cts. 
VoL. XXXYV. No. 906 FRIDAY, May 10, 1912 ANNUAL SUBSCRIPTION, $5.00 
Not a Work A Pp : Primarily 
Pe 10 Nn © G If eee: Book 
In this age of books there are few fields for the pioneer, and they most 
difficult. For years the subject of comparative anatomy has been taught ar- 
duously by lectures and reference books—these reference books being at first 
largely in the original German but more latterly in translations. Now for the 
first time comes what may be rightly called a 
TEXTBOOK 
The author is well-known—both as an investigator and as a writer—in this par- 
ticular field, and it is therefore that the publishers have unusual pleasure in an- 
nouncing the publication in early June of 
The Comparative Anatomy of 
the Vertebrates 
By J. S. KINGSLEY, 
PROFESSOR OF BIOLOGY IN TUFTS COLLEGE, BOSTON 
It aims to correlate the facts gained by the student in the laboratory, so that 
they may be of real value. 
It attempts to outline in clear language the processes and steps by which the 
various structures come into existence, showing the true resemblances, and in- 
dicating the ways in which the different organs are modified in the different 
classes of vertebrates. 
It treats of anatomy and ontogeny with here and there hints at the physio- 
logical side. 
It contains about 400 pages with 346 illustrations. 
The mechanical make-up is in harmony with the purpose-student’s text-book. 
Two sizes of type are used, the larger for matter to be mastered by the student, 
the smaller for details of less importance. The figures are fresh—mostly new, 
and none have appeared previously in any book in English. 
More than one hundred and fifty teachers have already 
expressed their interest. 
P. BLAKISTON’S SON & CO., Publishers 
1012 Walnut Street PHILADELPHIA 
