= 6 
FOREST INSECTS 
F. C. Craighead, in Charge 
R. A. St. George left Asheville, N. C., on July 18 for an assign— 
ment at Wisdom, Mont., to determine the practicability of killing Den— 
droctonus monticolae Hopk. in infested lodgepole pines by injecting 
poison into the trees. A saw is used to make a cut of sufficient size 
for receiving the poison. Trial will be made of several poisons which 
were found most promising in experimental work done at Asheville last 
year, in connection with shortleaf pines infested by the southern pine 
beetle (Dendroctonus frontalis Zimm.). The primary object of the ex-— 
periment is to find a less expensive method of treating infested trees 
than the methods in use at the present time. Studies in the medica— 
tion of trees are being continued at Asheville with pine and with cer— 
tain hardwoods, and some interesting results have been obtained. 
Contributions from the Gipsy—-Moth Laboratory 
Visitors to the Gipsy-Moth Laboratory in July included T. E. B. 
Pope, Milwaukee Public Museum, July 7, Prof. A. H. MacAndrews, College 
of Forestry, Syracuse University, July 11, and C. W. Stockwell, Japan-— 
ese Beetle Control, Camden, N. J., July 18. 
Recoveries have been made this year from points about Boston and 
Revere, Mass., where colonies of a tachinid, Chaetexorista javana B. 
and B., were put out in 1929. This tachinid is a parasite Of (tiem 
ental hag moth, Cnidocampa flavescens Walk., and the material from which 
the colonies were obtained was sent from Japan by T. R. Gardner, of the 
Japanese—Beetle Project. 

LIBRARY 
Mabel Colcord, Librarian 
New Books 
Allee, W. C., et al. 
Influence of soil reactions on earthworms. By W. C. Allee, M. 
M. Torvik, J. P. Lahr, and P. L. Hollister. Physiological Zool= 
ogy, v. 5, No. 2, p. 164-200, illus. April, 1930. (Litepeaee 
Cited, p. 197-200. } 
American Japanese technical conference on raw silk classification, Yoko—- 
hama, 1928. Minutes April-May, 1928. 368 p. [n. p.] Raw Silk 
Association of Japan, 1929. 
Armbruster, L., and Oenike, G. 
Die Pollenformen als Mittel zur Honigherkunftsbestimmung. 116 
p., illus., 23 pl., fold. chart. Nenmiinster in Holsteineene 
Wachholtz Verlag, 1929. (Biicherei fiir Rienenkunde, hrsg. von 
Ludwig Armbruster, Bd. 10.) 
