REPORT OF THE STATE ENTOMOLOGIST 1902 139 
not treated. The latter were in some cases very badly infested, 
having entire limbs nearly incrusted with thrifty scale insects. 
Lime, salt and sulfur mixture. This compound was applied to 
about 50 trees in the eastern end of our experimental orchard; 
and the results obtained from this test differ somewhat from 
those in other parts of the State under somewhat different 
conditions. The following formula was used: 10 pounds of lime 
and 20 pounds of sulfur were thoroughly boiled in 20 gallons of 
water for one and one half hours, or till the sulfur was dissolved, 
which was indicated by the solution assuming an amber color. 
This mixture was stirred frequently during the boiling, and 
then 30 pounds of lime, which had previously been thoroughly 
slaked by pouring hot water over it, and in which 15 pounds of 
salt had been dissolved by stirring, was added to the boiling 
lime and sulfur mixture. The whole of this mixture was cooked 
half an hour, being thoroughly stirred from time to time, and 
then enough water was added to make 60 gallons. The mixture 
was thoroughly strained through gunny sacks and sprayed as 
soon as possible, so as to apply it when hot. The mixture used 
in the experiments under consideration was boiled very thor- 
oughly, and there can be no question as to its having been 
properly prepared. 
Trees 4-14, 29-38, 49-59, 75-78 and 92-100 were treated with 
this preparation, as well as 20 to 25 large plumtrees in an old 
orchard just north of the experimental plot. The work was 
completed about 5 o’clock in the afternoon, and no rain was 
observed to fall till about 10 o’clock of the following day. There 
was however very little drying of the spray, since the atmos- 
phere was humid most of the time. The exact record of precipi- 
tation is given above under the 20¢ mechanical emulsion, p. 152. 
An examination of these trees Ap. 11 showed that, while they 
were apparently well covered with the mixture, in reality the 
rain had washed the finer portions against the rougher projec- 
tions on the bark and had also caused it to gather in masses on 
the smooth bark of the limbs. It is very probable that much 
of the more soluble material had been carried away, or deposited 
in spots here and there on the tree, much to the detriment of 
the application. 
