136 NEW YORK STATE MUSEUM 
the insecticide. Samples of the emulsion taken near the be 
ginning, the middle and end of the spraying gave respectively 
174, 13.6% and 15.6¢ of oil. These samples were taken while spray- 
ing under a reduced pressure and from both nozzles. This varia- 
tion is greater than any recorded in previous years and may have 
been due to the apparatus being somewhat out of order. Sunday, 
the 6th, 7ginch of rain fell, and between that and the 11th, 1%4 
inches more. The weather was such that no spraying was at- 
tempted between the initial application and the latter date. 
An examination July 7 showed that about all of the trees 
sprayed with the emulsion were infested with from very few to 
rather abundant young scale insects. They were found almost 
entirely near the center of the rows. There was no evidence to 
show that the fruit buds had been affected in the slightest by 
the application. 
An examination Nov. 25 showed that the trees were in very 
good condition. There were a few living scales on every one, 
and in a few cases they might be classed as somewhat abundant, 
but in no instance were there enough to interfere with the 
health of the tree. The general results were very satisfactory. 
All of the treated trees were in very thrifty condition and bore 
immense numbers of fruit buds. 
Experiments at Warwick. About 50 old peachtrees were 
sprayed with 20% crude petroleum emulsion on Mar. 25, which 
was a bright, sunshiny day, though in the afternoon there 
was some wind. The trees in this old orchard are from 
three to five or seven years of age, some of them being 15 
feet high. Two rows of small, three year old peachtrees, 
about 60 in number, on a hill, were also sprayed on the 
same day for the special purpose of ascertaining the effect 
of the insecticide on the fruit buds. The wind blew some, and 
practically all of the trees were well covered with the insecticide. 
Samples of the emulsion were taken at the beginning, middle 
and end of the spraying in the old orchard and gave respectively 
214, 36% and 32¢ of oil. This variation must have been due to the 
taking of the samples from one nozzle and under a lower pres- 
sure than that employed in most of the spraying. Another 
sample taken in the middle of the spraying of the two rows 
of young trees on the hill gave but 14¢ of oil. 
