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, Box A, Buffalo 15, N. Y.

Bausch and Lomb Optical Company, Rochester 2, N. Y.

Central Scientific Company, 1700 Irving Park Road, Chicago 13, Illinois.

General Biological Supply House, Inc., 8200 South Hoyne Avenue, Chicago 20, Illinois.

E. H. Sargent and Company, 4647 West Foster Avenue, Chicago 30, Illinois.

Ward’s Natural Science Establishment, Inc., P. O. Box 1749, Rochester 3, N. Y.