ented 
Weber, Hermann. 
‘ Biologie der Hemipteren. Eine Naturgeschichte der Schna- 
Peikenie 3.) °543.p., illus. Berlin, Julius springer, 1930. 
(Biologische Studienbiicher, hrsg. von Walther Schonischen, Ber- 
lin, XI.) (Literaturverzeichnis, p. 518-531.) 
megee co. J., and Hull, Callie. 
Handbook of scientific and technical societies and institutions 
of the United States and Canada. Ed. 2. 352 p. Washington, 
D. C., National Academy of Sciences, 1930. (National Research 
Council. Bulletin 76.) 
Wrangham, S. D. 
Wasps and how to destroy them. Introduction by W. P. Seabrook. 
rep. [London] The Pilot Press, 1929. 
Zander, Enoch. 
, Die Zucht der Biene. ~Ed. 35, 310 p., illus. “Sttttear 
Eugen Ulmer, 1930. (Handbuch der Bienen Kunde 5.) 
Zinsser, Hans. 
A textbook of bacteriology .. . with a section on pathogenic 
Protozoa by E. E. Tyzzer .. . (rewritten, rev. and reset). Ed. 
6. 10535 P., illus. New York & London, D. Appleton and Company, 
1929. (p. 797-818, typhus fever, trench fever, Rocky Mountain 
spotted fever, notes on delousing, and a consideration of the 
so-called Rickettsia bodies.) 
