BUSHMAN'S POPULAR PHYSIOLOGY. 



BLANCHARD & LEA, PHILADELPHIA, HAVE NOW READY, 

 PRINCIPLES OF 



ANIMAL AND VKGETABLE PHYSIOLOGY. 

 A Popular Treatise on the Phenomena and Functions of Organic Life. 



TO WHICH IS PREFIXED 



AN ESSAY ON THE GREAT DEPARTMENTS OF HUMAN KNOWLEDGE. 



BY J. STEVENSON BUSHMAN, M. D. 



In one handsome volume, royal 12mo., with over one hundred illustrations. 

 This little work, intended for the private student or asan academical class-book, 

 presents the leading principles and facts of Vegetable, Comparative, and Human 

 Physiology, in a clear and succinct form, according to the latest results of scien- 

 tific investigation. To the student entering upon this subject, it will, therefore, be 

 found a valuable guide, affording him a clear general view of the science, unin- 

 cumbered with unnecessary and confusing details, while forming a valuable intro- 

 duction to the larger and more elaborate works. The name of the author is a 

 guarantee of its accuracy, and that, upon every point treated, it is on a level with 

 the most advanced state of science. 



Lately Published. 



THE GEOLOGICAL OBSERYER. 



BY SIR HENRY T. DE LA BECHE, C. B., F. R. S., &c. 



WITH OVER THREE HUNDRED WOOD-CUTS. 



In one large and handsome octavo volume, of 700 pages. 

 The object which the author has proposed to himself in this work has been to 

 afford a general view of the chief points of the science, such as existing observations 

 would lead us to infer were established, to show how the correctness of such obser- 

 vations may be tested, and to sketch the direction in which they may apparently be 

 extended. To accomplish this, he has entered into a minute detail of the results of 

 geological investigations throughout the earth's surface, and, without confining 

 himself to a mere detail of facts, he has endeavored to explain the causes, as well 

 as the results of geological action. The assistance of numerous diagrams and il- 

 lustrations has also been resorted to, to make manifest to the student the various 

 forms of geological phenomena, and to guide him in the observations which he may 

 desire to make for himself. 



Just Issued. 



THE BOOK OF NATUHE; 



AN ELEMENTARY INTRODUCTION TO THE SCIENCES OF 



PHYSICS, ASTRONOMY, CHEMISTRY, MINERALOGY, GEOLOGY, 

 BOTANY, ZOOLOGY, AND PHYSIOLOGY. 



BY FRIEDRICH SCHOEDLER, Pii. D., 



Professor of the Natural Sciences at Worms, &c. &c. 



First American Edition^ with a Glossary and other Additions and Improvements., from, 



the SecoJid English Edition. 



TRANSLATED FRO.M THE SIXTH GERMAN EDITION, 



BY HENRY MEDLOCK, F.C.S., &c. 

 In one large and handsome crown octavo volume, extra cloth, of nearly 700 

 pages, with 679 beautiful engravings on wood. 

 The marked success which this work has enjoyed in Germany, where repeated 

 editions have rapidly been called for, and the equally favorable reception which it 

 has met in England, are sufficient proofs that the author has succeeded in his attempt 

 to supply a want of the age, by bringing the leading principles of the vast range of 

 natural science within the reach of the ordinary student, and at a price rendering it 

 acceptable to all. Thoroughly popular in its form and style, while strictly scien- 

 tific in its teachings, it presents the various branches of science in their most ad- 

 vanced state of development, and showing their mutual relations and dependence, 

 gives the student a clear and more definite idea of the whole than can be obtained 

 from larger detached treatises No expense has been spared in carrying out the 

 plans of the author, and the profusion of illustrations render the factsadvanced easy 

 of comprehension ; while, at the very low price at which the volume is afforded, an 

 extensive sale is requisite to reimburse the publishers. 



