VALUABLE TEXT-BOOKS. 



PBINCIPLES OF ZOOLOGY; Touchiug the Structure, Development, Dis. 

 tribution, and Natural Arraugemeat, of the Races of Animals, living and extinct^ 

 with numerous Illustrations.' For the use of Schools and Colleges. Part I. COiM- 

 PAKATivE Physiology. By Louis Agassiz and Acgustl's A. Gould, llevised edi- 

 tion, 12mo, cloth, $1.00. 



" It is not a mere book, but a v/ork — a real work in the form of a book. Zoology is an interesting 

 science, and here is treated with a masterly hand. It is a work adapted to colleges and schools, and 

 no young man should be without it." — Scientijic American. 



" Tins work plactis us in possession of intorniation half a century in advance of all our elementary 

 Works on this subject. . . No work of the same dimensions has ever appeared in the English lau- 

 ttaage containing so much new and valuable information." — Pkof. James Hall, Albany. 



" The best book of the kind in our language." — Christian Examintr, 



PBINCIPLES OF ZOOLOGY, PART II. Systematic Zoology. In 

 preparation. 



THE ELEMENTS OF GEOLOGY; adapted to Schools and Colleges. With 

 numerous Illustrations. By J. 11. LooJiis, President of Lewisburg University, Pa. 

 12mo, cloth, 75 cts. 



" It is surpassed by no work before the American public." — i/. B. Anderson, LL. D., President 

 Rochester University. 



" This is just such a work as is needed for our schools. We see no reason why it should not 

 take its place as a text-book in all the schools in the land." — X. Y. Observer. 



"Admirably adapted for use as a text-book in common schools and academies."— Co«(;re5ra<iOH- 

 alist, Boston. 



ELEMENTS OP MORAL SCIENCE. By Francis Wayland, D. D., late 

 President of Brown University. 12iuo, cloth, $1.25. 



MORAL SCIENCE ABRIDGED, and adapted to the use of Schools and 



Academies, by the Author. Half morocco, 50 cts. 

 The same, Cheap School Edition, boards, 25 cts. 



This work is used in the Boston Schools, and is exceedingly popular as a text-book wherever it 

 has been adopted. 



ELEMENTS OP POLITICAL ECONOMY. By Francis Wayland, 

 D. D. 12mo, cloth, $1.25. 



POLITICAL ECONOMY ABRIDGED, and adapted to the use of Schooli 

 and Academies, by the Author. Half morocco, 50 cts. 



" It deserves to be introduced into every private family, and to be studied by every man who 

 has an interest in the wealth and prosperity of his country. It is a subject little understood, even 

 p aetically, by thousands, and still less understood theoretically. It is to be hoped this will form 

 I lass book, and be ftiithfully studied in our academies, and that it will tind its way into every 

 family library ; not there to be shut up unread, but to afford rich material for thought and discus-. 

 Bion in the familv circle." — Puritan Recorder. 



All the above Works by Dr. Wayland are used as text-books in most of the colleges and higher 

 Bcliools throughout the Union, and arc highly approved. 



inr G.6fL. keep, in addition to works published by themselves, an extensive assort- 

 ment of irorh-s published by others, in all departments of trade, which they supply 

 at publishers' prices. They invite the attention of Booksellers, Travelling Agents., 

 Teachers, School Committees, Clergymen, and Professional men generally (to uhom. 

 a liberal discount is uniformly made), to their extensive stock. Copies of Text-books 

 for examination will be sent by mail or otherwise, to any one transmitting ONis 

 HALF the price of the same, rcr Orders from any part of the country promptly 

 attended to with faithfulness and despatch. (33) 



