Scientific Publications. 



GENEKAI. PHYSIOLOGY OF MUSCLES AND NERVES. By Dr. I. 



Rosenthal, Professor of Physiology at the University of Erlangen. With 

 seventy-five Wootlcuts. (" International Scientific Series.") 12mo, cloth, 

 $1.50. 



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

 and nerves is, as far as I know, the first of its kind. The general data for thlrf 

 Oranch of science have been gained only within the past thirty years." — Extract 

 fi-om Prtface. 



SIGHT : An Exposition of the Principles of Monocular and Binocular Vision 

 By Joseph Le Conte, LL. D., author of "Elements of Geology"; "Re- 

 ligion 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 beet 

 of foreign works on this 8ul)ject. Professor Le Conte has long been known as 

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

 a master-hand." — The JWition. 



ANIMAL LIFE, as aflfected liy the Natural Conditions of Existence. By 

 Karl Semper, Professor of the University of Wurzburg. With 2 Maps 

 and 106 Woodcuts, and Index. 12mo, cloth," $2.00. 



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

 zoological literature which has appeared for some time." — Nature. 



THE ATOMIC THEORY. By Ad. Wuetz. Membre de Tlnstitut ; Doyen 

 Ilonoraire de la Faculte de Medecine ; Professeur a la Factilte des Sciences 

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

 ant Master at Sherborne School. 12qio, 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 selected so able to perform the task in a masterly way as 

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

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

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

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

 made wonderfully clear and attractive."— Ti^e Popular Science Monthly. 



THE CRAYFISH. An Introduction to the Study of ZoSlogy. By Professor 

 T. H. Huxley, F. R. 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 irreat zoological questions which excite so lively an interest at the 

 present day." 



" The reader of this valuable monograph will lay it down with a feeling o< 

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

 ir.gly slight and unpretending a subject." — Saturday Review. 



D. APPLETON & CO., Publishers, 



1, 3. & 5 Bond Street, New YoRii. 



