D. APPLETON & CO.'S PUBLICATIONS. 



GENERAL PHYSIOLOGY OF MUSCLES AND NERVES. 



By Dr. I. Rosenthal, Professor of Physiology at the University of 



Erlangen. With seventy-five Woodcuts. (" International Scientific 



Series.") 12mo. Cloth, $1.60. 



" The attempt at a connected account of the general physiology of mnscles and 



nerves is, aa far as I know, the flret of its kind. The general data for this branch 



of science have been gained only within the past thirty years."— ^Kiroct /rwn 



SIGHT : An Exposition of the Principles of Monocular and Binocular 

 Vision. By Josbph Le Conte, LL.D., author of "Elements of Ge- 

 ology"; "Religion and Science"; and Professor of Geology and 

 Natural History in the University of California. With numerous 

 Illustrations. 12mo. Cloth, $1.50. 



" It is pleasant to find an American book which can rank with the very best 

 of foreign works on this subject. Profeseor Le Conte has hmg been known as 

 an original investigator in this department ; all that be gives us is treated with 

 a master-hand."— 5746 Nation. 



ANIMAL LIFE, as affected by the Natural Conditions of Existence. 

 By Karl Semper, Professor of the University of Wiirzburg. With 

 2 Maps and 106 Woodcuts, and Index. 12mo. Cloth, $2.00. 

 "This is Id many respects one of the most interesting contributions to 

 zoSlogical literature which has appeared for some time."— iVacure. 



THE ATOMIC THEORY. By An. Wurtz, Membra de I'Institut ; 

 Doyen llonoraire de la Facultd de M^decine ; Professeur ^ la Faculty 

 des Sciences de Paris. Translated by E. Cleminshaw, M. A., F. C. 

 S., F. I. C, Assistant Master at Sherborne School. 12mo. Cloth, 

 $1.60. 



"There was need for a book like this, which dlscnsses the atomic theory both 

 in its historic evolution and in its present form. And perhaps no man of this 

 age conld have been selected so able to perform the task in a masterly way as 

 the illustrious French chemist, Adolph Wurtz. It is impossible to convey to the 

 reader, in a notice like this,any adequate idea of the scope, lucid instructiveness, 

 and Bcientiflc interest of Professor Wnrtz's book. The modern problems of 

 chemistry, which are commonly so obscure from imperfect exposition, are here 

 made wonderfully clear and attractive."- TA* Popular Science MontlUy. 



THE CRAYFISH. An Introduction to the Study of Zoology. By 

 Professor T. H. Hdxley, F.B.S. With 82 Llustrations. 12mo. 

 Cloth, $1.75. 



" Whoever will follow these pages, crayfish in hand, and will try to verify for 

 himself the statements which they contain, will find himself brought face to face 

 with all the great zoological questions which excite so lively an interest at the 

 present day." 



"The reader of this valuable monograph vrill lay it down with a feeling of 

 wonder at the amount and variety of matter which has been got out of so seem- 

 ingly slight and unpretending a evibjeiit."— Saturday SevUw. 



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