ROSS: HOW TO COLLECT AND PRESERVE INSECTS 59 



Entomology for Introductory Courses, by Robert Matheson. 

 The Comstock Publishing- Company, Ithaca, N. Y. 



A Textbook of Entomology, by Herbert H. Ross. John Wiley 

 & Sons, Inc., 440 Fourth Ave., New York, N. Y. 



WHERE TO BUY SUPPLIES 



The following list, by no means complete, contains names 

 and addresses of companies that furnish entomological supplies. 

 Most of these companies will send catalogs and price lists on 

 request. 



American Optical Company, Scientific Instrument Division. 

 Buffalo 15, N. Y. 



Bausch and Lomb Optical Company. 626 St. Paul Street, 

 Rochester 2, N. Y. 



Central Scientific Company. 1700 Irving Park Boulevard, 

 Chicago 13, 111. 



General Biological Supply House, Inc. 761-763 East Sixty- 

 ninth Place, Chicago 37, 111. 



E. H. Sargent and Company. 155-65 East Superior Street, 

 Chicago 11, 111. 



Ward's Natural Science Establishment, Inc. P. 0. Box 24, 

 Beechwood Station, Rochester 9, N. Y. 



