HANDBOOK OF MEDICAL ENTOMOLOGY 



WILLIAM A. RILEY, Ph.D., Professor of Insect Morphology and Parasitology, 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 

 their determination, and methods of control. Bound in Library Buckram, 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 family of insects of North America. The leading school and 

 college text. 700 pages. 800 figures. Price, $3.75 net. 



OPTIC PROJECTION 



SIMON HENRY GAGE, Professor of Histology and Embryology. Emeritus, Cornell 

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



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, $3.00. 



THE MICROSCOPE 



(12th Revised Edition Ready) 



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



Cornell University. 



An authoritative up-to-date guide for every one 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 its relation to commercial, civic, aesthetic and public health 

 interests of man. There is no book in the English language covering the field. Co- 

 piously 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 unifortn 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 PUBLISHING CO. 



ITHACA, NEW YORK, U.S.A. 



