^u^ 



SCIENCE 



New Series. 

 Vol. VII. No. 182. 



Friday, June 24, 1898. 



Single Copies, 15 CTS. 

 Annual Subschiption, ?5.00. 



NEW Text-Books on science 



Published by THE MACMILLAN COMPANY 



A Text-Book of Entomolo 



By A. 



gy 



S. PACKARD, M.D., Ph.D. 



Professar of Zoology and Geology, 

 Brown University. 

 Author of "Guide to the Study of Insects," etc., etc. 

 Cloth. 8vo. $4.50 net. 

 At the end of each section is a carefully prepared 

 bihliography of the preceding topic, an important 

 feature of the volume for those ivho wish to continue 

 linvestigations, general or specialized. 



INCLUDING THE ANATOMY, PHYSIOLOGY, 

 EMBEYOLOGY AND METAMOHPHOSES OF 



INSECTS 



FOE THE AGEICULTUEAL AND TECHNICAL 

 SCHOOLS AND COLLEGES AS WELL AS 

 FOE THE WOEKING ENTOMOLOGISTS. 



A Text-Book of Zoology 



Ey T. J. PARKER, D.Sc, F.R.S. 



Author of "Elementary Lessons in Biology," etc., 

 AND 



WM. A. HASWELL, D.Sc. 



TWO VOLS. PROFUSELY ILLUSTRATED. 



Cloth. 8vo. $9.00 net. 



" We believe that it will be found an invaluable 

 aid not only to special students of zoology but also 

 to a large number of those whose main interest lies in 

 other branches of scientific study. Written with a clear- 

 ness, accuracy and method that bespeak the prac- 

 ticed teacher, it is admirably illustrated with a pro- 

 fusion of figures — there are nearly twelve hundred in 

 all — of the highest excellence. ... In all these 

 respects the book offers a model which cannot be too 

 highly praised." — E. B. W. in Science. 



A Text-Book of Physiology 



EDITED BY 



E. A. SCHAFER, LL.D., F.R.S. 



Professor of Physiology, University College, London. 

 Cloth. 8vo. $8.00 net. 



Foe Advanced Students. 

 By Leading Beitish Physiologists each of whoni 

 deals with some branch of the subject to which he has 

 given special attention. 



A Text-Book of Botany 



By Dr. EDW. STRASBURGER 



and Drs. Noll, Schenck and Schimper 



teanslated by 



H. C. PORTER 



University of Pennsylvania. 

 Price, complete in one volume, $4.50 net. 

 Part I. Morphology and Physiology, $2.50 net. 

 Part II. Cryptogams and Phanerograms, $2.50 net. 



" The volume in its German dress is so well known 

 to botanists that it is quite needless to speak of its 

 merits. Perhaps no man living is better prepared 

 than Dr. Strasburger to undertake the presentation of 

 the portion of the work which deals with the internal 

 morphology of plants. Certainly no man has a better 

 knowledge of the structure of the cell, and the many 

 changes which it undergoes in constitution and form." 



With over 500 illustrations, in part colored. 

 In Two Volumes. 8vo. Cloth. 



Send for a circular describing the above more fully. Address 



THE MACMILLAN COMPANY, 66 Fifth Avenue, New York City 



