BIOLOGY OF THE TERMITES OF THE EASTERN UNITED STATES. 19 
ton, Mass., has described and illustrated a quiescent stage in the 
development of the nymph of the first form of Leucotermes jlavipes, 
which stage was discovered by Prof. W. M. Wheeler, of Bussey Insti- 
tute. 
While investigating damage to the bases of telegraph poles by 
wood-boring insects a large fertilized true queen of Leucotermes 
flavipes was found by the writer on August 12, 1910. a The finding of 
this interesting form, usually considered to be rare in colonies of our 
native termites, served as an incentive to further biological study on 
the habits of our common species. On August 11, 1911, molting 
Fig. 4.— View at Falls Church, Va., showing a portion of the treated experimental stakes under test, 
as to the relative effectiveness of preventives against termite attack. (Original.) 
larvae in the quiescent stage were observed by the writer for the first 
time, in a colony in Illinois. Special investigations were begun at 
Falls Church, Va., in March, 1912, to determine (1) the habits of our 
common termites, (2) the effectiveness of various methods and chem- 
ical wood preservatives in preventing attack by our native termites 
(fig. 4), and (3) the ll immunity " (?) & or relative resistance of native 
and tropical species of wood. c 
a Snyder, T. E. Record of the finding of a true queen of Termes flavipes Kol. 
Proc. Ent. Soc. Wash., v. 14, No. 2, p. 107-108, June 19, 1912. 
& It is doubtful if any species of native wood of economic importance is absolutely 
immune to termite attack. 
c Impregnation of wood to resist insect attack. Amer. Lumberman, Nov. 15, 1913 
