HANDBOOK OF MEDICAL ENTOMOLOGY 



WILLIAM A RILEY, Ph.D. Professor of Insect Morphology andParasi tology. 



Cornell University, and O. A. JOHANNSEN, Ph.D., Professor of 



Biology, Cornell University. 



A concise account of poisonous, parasitic and disease-carrying insects and 



their allies, including descriptions and illustrations of the principal species 



with keys for ther determnaton, and methods of control. Bound in library 



buckrum, medium 8vo. 348 pages. Price, $2.00 net. 



A MANUAL FOR THE STUDY OF INSECTS 



JOHN HENRY COMSTOCK. Professor of Entomology, Emeritus, 

 Cornell University. 

 This handbook is designed to meet the needs of teachers in the public 

 schools and of students in high schools and colleges. The book is so written 

 that any intelligent teacher can find out for himself the more important facts 

 of insect life. Includes tables for identifying any famil vof in'sects of North 

 America. The leading school and college text. 700 pages. 800 figures. 

 Price, $4.25 net. 



OPTIC PROJECTION 



SIMON HENRY GAGE, Professor of Histology and Embrvologv, Emeritus. 



Cornell University, and HENRY PHELPS GAGE, Ph.D., 



Cornell Univeisity. 



This is a very comprehensive work, dealing fundamentally and practically 



with the Magic Lantern, the Projection Microscope, the Reflecting Lantern, 



and the Moving Picture Machine. 730 pages. Over 400 figures. Postpaid, $3. 



THE MICROSCOPE 



(13th Revised Edition Ready) 

 SIMON HENRY GAGE, Professor of Histology and Embroyology, Emeritus, 

 Cornell University. 

 An authoritative, up-to-date guide for everyone who uses the microscope 

 and for every beginner who wishes to use the microscope intelligently and 

 effectively. Should be in every school and college laboratory. 472 pages. 

 265 figures. Postpaid, ?3.00. 



THE LIFE OF INLAND WATERS 



A Text- Book of Fresh Water Biology. 

 JAMES G. NEEDHAM, Ph.D., Professor of Limnology and General Biology 

 in Cornell University, and JOHN T. LLOYD, A.B., Assistant in 

 Limnology in Cornell University. 

 This book is a broad presentation of the field of fresh-water biology, 

 primarily in its scientific aspects, also in relation to commercial, civic, 

 aesthetic and public health interests of man. There is no book in the Eng- 

 lish language covering the field. Copiously illustrated with photographs 

 from nature. 438 pages. 244 figures. Price, $3.00. 



THE WINGS OF INSECTS 



JOHN HENRY COMSTOCK, Professor of Entomology. Emeritus, 

 Cornell University. 

 This volume is an exposition of the uniform terminology of the wing-veins 

 Of insects. Royal octavo. 430 pages. Illustrated. Price, $3,75 net. 



SEND FOR ILLUSTRATED CIRCULARS 



For Sale at all Bookdealers or Sent Direct from 



THE COMSTOCK POBLISHING COMPANY 



ITHACA, NEW YORK, U. Sr A. 



