RED CEDAR CHESTS AGAINST MOTH DAMAGE. 5 
experiment was started revealed no living adults, no eggs, and no 
larvae. In a trunk serving as a check to which the same number of 
adults were added at the same time, more than 50 live larvae were 
counted on the flannel at the close of the experiment. This is the 
only reference in literature to the effect of cedar chests upon adult 
clothes moths. 
The following data indicate that the cedar chests used by the 
writers have little practical effect upon the length of life or upon the 
egg-laying of adult moths. The data are incomplete, but sufficient to 
prove that adults developing in chests from larvae transforming to 
the pupa stage in the chests can live at least 10 days, which in 
longevity experiments conducted as checks was about the average 
length of life under normal conditions. It is possible, moreover, for 
such adults to mate and deposit eggs that will hatch. 
On June 17, 1920, 15 adults (sex undetermined) newly emerged in 
chests were placed with cloth in Chest 1. On June 26, 11 were alive 
and eggs had been laid. On June 28 all adults were dead, and 123 
eggs had been laid; by July 6 all eggs had hatched. Twenty larvae 
removed from the chests on June 28 continued to develop normally 
outside the chest. 
On July 2, 1920, 7 adults (sex undetermined) emerging in the 
laboratory were introduced with cloth into Chest 2. Adults were 
found depositing eggs on July 3. Examination on July 17 showed 18 
eggs had been deposited, 14 having hatched. One adult was barely 
alive, being too feeble to crawl. 
On March 28, 1921, one group of three virgin moths and another 
group of five, emerging within cedar chests, were placed with cloth in 
Chest 1. Examination on May 31, 1921, showed all adults dead, and 
53 and 30 eggs deposited, respectively. These eggs were infertile and 
did not hatch. 
On March 30, 1921, 6 adults (sex undetermined) found emerged in 
cedar chests, were placed the same day in Chest 2, with cloth. Ex- 
amination on April 28 showed 1 adult alive, about 80 eggs laid and 
hatched, and living and dead larvae. 
EFFECT UPON EGGS. 
Cedar chests have no apparent effect upon clothes-moth eggs. This 
is true of eggs deposited in the chests by females emerging in the 
chests or by females emerging in the laboratory and placed in the 
chests for oviposition, and of eggs laid outside of chests and later 
introduced into them. Scott, Abbott, and Dudley (17) state that 
an examination of a piece of flannel containing many clothes-moth 
eggs 23 days after it was placed in a cedar chest showed that practi- 
cally all the eggs were hatched but that the resulting larvae had died 
almost immediately. A duplicate test by them gave identical re- 
sults. 
On June 5 and 18, and July 10, 1920, and February 12, March 3, 10, 
and 28, April 27, May 7 and 14, and June 6, 1921, an average of 
about 300 eggs, ranging in age from 1 to 7 days, were introduced into 
each of four cedar chests. Of 50 experiments conducted to determine 
the effect of chests upon the egg vitality the following 10 are recorded 
as typical : 
(1) Twenty-six adults (sex undetermined) were found March 28, 
1921, having developed in cedar chests from larvae introduced into 
