Seientifie Publications. 



GENXIBAI. PHTSIOtOGT OF MUSCIiES AND NERVES. By Dr. I. 



BoBENXHAi., ProfeBBor of Physiology at the UniverBity of Erlangen. With 

 seTenty-flre Woodctttu, (" International Scientific Series.") 12mo, cloth, 

 $1.50. 



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

 hnd nerves is, as far as I loioW; the first of its kind. The general data for thlri 

 branch of science liave beengaued only within the past thirty years."— .fx^ract 

 from Preface. 



SIGHT : An Bxposition of the PrincipleB of Monocular and Binocular Vision. 

 By Joseph Lb Conte, LL.D., author of "Elements of Geology"; "Ee- 

 ligion and Science " ; and Professor of Geology and Natural History in the 

 TJniTerBity of California. With numerous Illnstrations. ISmo, cloth, $1.50. 



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

 of foreign works on this subject. Professor Le Conte has long been known as 

 an origmal Investigator in this department; all that he gives us is treated with 

 a master-hand." — The Nation. 



AKIMAIi lilFE, as afi'ected by the Natural Conditions of Existence. By 

 E^BL Semfeb, Professor of the University of Wiirzburg. With 2 Maps 

 and 106 Woodcuts, and Index. ISmo, cloth, $2.00. 



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

 zoSIogical literature which has appeared for some time."— i^a^ajv. 



THE ATOMIC THEORY. By An. Witrtz, Membre de I'lnstitut ; Doyen 

 Honoraire de la Faculty de M€decine ; Professeur 4 la PacultS des Sciences 

 de Paris. Translated by B. Cleminshaw, M. A., F.C.S., B. I. C, Assist- 

 ant Master at Sherborne School. 12mo, cloth, $1.50. 



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

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

 age could have been eelected so able toperform the ta& 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 instmctiveness, 

 and scientific interest of Professor Wurtz' s book. The modem problems of 

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

 made wonderfully clear and attractive." — The Fopular Saence Jfonthly. 



THE CRATETSH. An Introduction to the Study of ZoOlogy. By Professor 

 T. H. HuxLET, F. K. S. With 82 Illustrations. 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 ereat zoological questions which excite so lively an interest at the 

 present day." 



" The reader of this valuable monograph will lay it down vrith a feeling o{ 

 wonder at the amount and variety of matter which has been got out of so beem* 

 Icgly Blight and unpretending a Bobject."— Saturday Beview. 



D. APPLETON & CO., Publishers, 



1, 3. & E Bond Stbeet, Nbw Yo^s. 



