New YorK AGRICULTURAL EXPERIMENT STATION. 329 
DETAILED RESULTS. 
The detailed results, supplemental to those in Table VII, 
showing the effect of the treatment on apples 27 to 380, up to 
the time of the final examination, September 30, appear below: 
Apple No. 27.— Thirty adult females alive; 35 scales in hiber- 
nating stage alive; 13 larve dead; remainder missing. , 
Apple No. 28.— Wighteen adult females alive, with from 10 to 30 
dead and from 1 to 8 living larvee under the scales. Six of the 
adult females had raised their scales above the crust formed by 
the wash; 34 young, with scales in white stage, alive; eighteen 
of these had lifted their scales so that their bodies could be 
seen; 71 larve dead upon the surface of the crust formed by the 
wash. Remainder of the scales dead or missing. 
Apple No. 29.— Twenty-six adult females living, with from 3 to 
11 dead and from 2 to 9 living larve under their scales; 43 dead 
larve on the sides of the apple where the crust was thin; 36 
young scales, that had passed second molt, had raised their 
scales somewhat but were alive. Remaining scales dead. 
Apple No. 30.— Six adult females alive with from 8 to 6 dead 
and 0 to 4 living larve under their scales; 35 dead larve on 
surface of crust formed by wash; 87 young females alive, 
although many were so located as to be under a heavy crust, 
22 of these females, located where the crust was thin, had 
raised their scales somewhat. 
CONCLUSIONS. 
In these experiments the adults were but little affected by the 
heavy precipitate while the young scales were, as a rule, unable 
to withstand it. The fact that the young scales were killed in 
greatest numbers on those parts of the apple which were most 
heavily covered with the precipitate further indicates the 
mechanical effects of the heavy crust in killing the young scales 
either by smothering them or by preventing their securing food. 
In the-previous experiments, notably I and II, there were solu- 
ble compounds possessing some insecticidal value associated 
with the precipitate, so that in many instances it was a matter 
of doubt to which of the two to credit the destruction of the 
