4 TffE AMERICAN SCIENCE ZEKIES. 



ZOOLOGY. By A. S. PACKARD. Professor in Brown 



sity. 

 Advanced Course. 8vo. 7 19 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 theii 

 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 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 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 type of the class, and 

 bases the study of other forms on the knowledge thus obtained. 



From HERBERT OSBORN, Professor of Zoology, Iowa Agricultttral 

 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 

 gi-ound 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 pupil's mind with a mass of what may appear to /him 

 unrelated facts 



