4 THE AMERICAN SCIENCE SERIES. 
ZOOLOGY. By A. S. PackarD, Professor in Brown Univer- 
sity. 
Advanced Course. Large 1zmo. Pp. 719. $3.00. 
Designed to be used either in the recitation-room or in the 
laboratory. It will serve as a guide to the student who, with a 
desire to get at first-hand a general knowledge of the structure 
of leading types of life, examines living animals, watches their 
movements and habits, and finally dissects them. He is pre- 
sented first with the facts, and led to a thorough knowledge 
of a few typical forms, then taught to compare these with 
others, and finally led to the principles or inductions growing 
out of the facts. 
From A. E. VerriLt, Professor of Zoology in Yale College: ‘* The 
general treatment of the subject is good, and the descriptions of 
structure and the definitions of groups are, for the most part, clear, 
concise, and not so much overburdened by technical terms as in sev- 
eral other manuals of structural zoology now in use.” 
Briefer Course. 12mo. Pp. 334. $1.40. ; 
The distinctive characteristic of this book is its use of the 
object method. The author would have the pupils first examine 
and roughly dissect a fish, in order to attain some notion of 
vertebrate structure as a basis of comparison. Beginning then 
with the lowest forms, he ieads the pupil through the whole 
animal kingdom until: man is reached. As each of its great 
divisions comes under observation, he gives detailed instruc- 
tions for dissecting some one animal as a type of the class, and 
bases the study of other forms on the knowledge thus obtained. 
From Herspert Ossorn, Profissor of Zoology, Iowa Agricultural 
College: ‘1 can gladly recommend it to any one desiring a work of 
such character. ~ While I strongly insist that students should study 
animals from the.animals. themselves,—a point strongly urged by 
Prof. Packard in his preface,—I also recognize the necessity of a 
reliable text-book as a guide. As such a guide, and covering the 
ground it does, I know of nothing better than Packard’s.” 
From D. M. Fisk, Professor of Natural History, Hillsdale College : 
“The ‘Briefer Courses’ of Packard and Martin have been adopted, 
and for these reasons: 1. They are brief ; the lessened mechanical 
labor of mastering a text leaves time for more observation and for 
comparison of authorities. 2. They are clear; the work of cutting 
away needless nomenclature hus been done with skill. 3. They are 
authoritative ; serious students can have confidence in even brief and 
dogmatic statemnents, knowing they come from a master, and not from 
_amerecompiler. 4. Zev are fresh ; fossils are good in their places, 
but a fossil text-book in science is a fraud on youth,” 
