SCIENCE 



Kiw Series 



TOL. XXXVIII. No. 967 



Friday, July 11, 1913 



Single Copies, 15 Cts. 

 Annual Subsobiption, S5.00 



BIOLOGICAL 



TEXT BOOKS WRITTEN BY SUCCESSFUL 

 TEACHERS FOR TEACHING PURPOSES 



THE PRINCIPLES OF 

 BIOLOGY 



Including Brief Outlines for Laboratory 

 Work 



By J. I. Hamaker, Professor of Biology, Ran- 

 dolph-Macon Woman's College, Virginia. 267 

 lUustrations. 469 Pages. Cloth 11.50 Post- 

 paid. 



Part I gives the fundamentals of plant organ- 

 ization and life processes. Part II does the same 

 for Animals. Part III discusses the more impor- 

 tant general biological phenomena. 



THE COMPARATIVE ANA- 

 TOMY OF THE VERTE- 

 BRATES 



By J. S. KiNGSLET, Professor of Biology in Tufts 

 College, Massachusetts. 346 Illustrations. 

 Octavo. 410 Pages. Cloth, $2.25 Postpaid. 

 "Teachers of comparative anatomy have long 

 felt the need of a suitable textbook on the sub- 

 ject. This new book by Professor Kingsley ex- 

 actly meets the requirements." 



— American Journal of Science. 



MICROBIOLOGY 



A Text-book of Micro-organisms, General and Applied 



By various writers. Edited by Chables E. Marshall, Professor of Microbiology and Director of 

 Graduate School, Mass. Agricultural College. 129 lUustrations (1 Colored Plate). Flexible Cloth, 

 $2.50 Postpaid. 



Discusses Morphology, Culture and Physiology of Micro-organisms, including Nutrition and Meta- 

 bolism, Physical Influences ; Bacteriology of Dairy, Soil, Water Supplies, Sewage Disposal, Air, 

 Special Manufactures, Diseases of Man, Animals and Plants. 



ELEMENTARY ZOOLOGY 



By T. W. Galloway, Ph.D., Professor of Bio- 

 logy, James Milliken University, Decatur, Illi- 

 nois. 160 Illustrations. Octavo. 438 Pages. 

 Cloth, S1.25 Postpaid. 



"The material is excellently classified and of 

 sufficient detail to get a young student thoroughly 

 interested, if he has the slightest turn at all 

 toward science." — American Educ. Review. 



ZOOLOGY 



2nd Edition 



By T. W. Galloway, Professor of Biology, James 

 Milliken University, Decatur, IlUnois. 240 

 Illustrations. Octavo. 460 Pages. Cloth, 

 $2.00 Postpaid. 



"It is no small compliment to this volume to 

 say that it is well balanced in its treatment of 



Zoology in the widest sense few recent 



textbooks bear comparison with this volume." 



— The Nation. 



P. BLAKISTON'S SON & CO. Publishers 



1012 WALNUT STREET PHILADELPHIA 



