THE AMERICAN SCIENCE SERIES. 
ZOOLOOr. By A. S. Packard. Professor in Brown Univer- 
sity. 
Advanced Courset 8vo. 719 pp. 
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. Verrill, Professor 0/ Zoology in Yale College: **The 
general treatment of the subject is good, and the descriptions ol 
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 n.anuals of structural zoology now in use." 
Briefer Course. i2mo. 334 pp. 
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 leads 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 t\ pe of the class, and 
bases the study of other forms on the knowledge thus obtained. 
From Herbert Csborn, F7vfessor of Zoology, Iowa Agricultural 
College : *' I 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." 
First Lessons in Zoology. i2mo. 290 pp. 
In method this book differs considerably from those men- 
tioned above. Since it is meant for young beginners, it de- 
scribes but few types, mostly those of the higher orders, and dis- 
cusses their relations to one another and to their surroundings. 
The aim, however, is the same with that of the others ; namely, 
to make clear the general principles of the science, rather than 
to fill the pupils mind with a mass of what may appear to him 
unrelated facts. 
