SCIENCE-ADVERTISEMENTS 



New and Forthcoming Books 



Kellicott's General Embryology 



By WILLIAM E. KELLICOTT, Professor in Goucher College 



v + 376pp. 8vo. $2.50. 



This textbook for college classes emphasizes the importance of general em^ 

 bryology in the collegiate study of biology. The topics considered have 

 thruout been approached from the standpoint of their general biological re- 

 lations, and in the selection of facts mentioned and the topics discussed, as well 

 as in the style and method of presentation, the student has been first in mind. 

 The arrangement of the subject-matter in two sizes of type may prove useful 

 for those undertaking a brief course. 



Kellicott's Outlines of Chordate Development 



By WILLIAM E. KELLICOTT. (Ready in September) 



This manual, which supplements the above book, introduces the student 

 to the subject thru the embryological history of Amphioxus. This is followed 

 by chapters on the Frog, the Chick and the Mammal. 



Noyes's Text=Book of Chemistry 



By WILLIAM A. NOYES, Professor in the University of Illinois 



{Ready in September) 



In this new college text-book it is intended to make the presentation of the 

 subject thoroly scientific, yet so clear and simple in style that college students 

 who have had an elementary course in physics may use the book successfully 

 without any previous study of Chemistry. The atomic and kinetic theories of 

 matter are presented in close relation with the experimental facts on which they 

 rest, in such a manner that the student may accept them on the basis of con- 

 vincing evidence of their truth, and not on the basis of authority. The doc- 

 trine of equilibrium in chemical reactions is given a large place in the book. 

 Some of the recently developed theories of Chemistry and also new advances in 

 Applied Chemistry are given in such a way as to produce the impression that 

 the science is not a branch of knowledge which is complete and finished, but 

 rather one that is rapidly growing and changing. 



.^^ HENRY HOLT AND COMPANY 



■ ''^ 34 West 33d Street 623 So. Wabash Ave. 



NEW YORK CHICAGO 



