288 
JOURNAL OF ECONOMIC ENTOMOLOGY 
Check—no treatment.,. 
Washington, Indiana, 1922-23 
Miscible oil (Scalecide) 1 to 15. Fall 
Lubr eating oil emulsion 2 per cent. “ 
Liquid lime-sulphur 1 to 7J4. “ 
Check—no treatment. 
Bicknell, Indiana, 1922-23 
Miscible oil (Scalecide) 1 to 15. Fall 
Miscible oil (Scalex) 1 to 15. “ 
Petroleum soap (Sunoco) 1 to 15. “ 
Lubricating oil emulsion 2 per cent. “ 
Liquid lime-sulphur 1 to 6 . “ 
Check—no treatment. 
Paoli, Indiana, 1922-23 
Misc ble oil (Scalecide) 1 to 15. Fall 
Petroleum soap (Sunoco) 1 to 15. 
Lubricating oil emulsion 2 per cent. “ 
Check—no treatment. 
Percentage of scale actually killed by spray, figured after the per 
check had been eliminated. 
2 Tlie results recorded here are from the best of the several dry 
tested. 
[Vol. 17 
61.6 
0 
100 
100 
98.2 
97.5 
82.4 
75.8 
27.2 
0 
99 
96.6 
100 
100 
100 
100 
97.8 
93.8 
80 
44.4 
64 
0 
99.3 
98.8 
99.1 
98.1 
96.4 
93.7 
41.2 
0 
cent dead in 
limesulphurs 
earlier counts except in the case of the lime-sulphur tests which ran 
rather uniformly slightly higher by one to two per cent. 
The 1922-23 tests were made in three localities, those at Bicknell 
being made Nov. 21, 1922; at Washington, Nov. 23; and at Paoli, 
Nov. 24. Counts were made Feb. 26, Feb. 25, and Feb. 27, respectively. 
From 500 to 1,000 scales were counted in each test. 
The spray rod with angle disk nozzles were used where they were 
available and where the guns was used, special care was exercised in 
securing thorough applications. The 1921 applications were made by 
the writer; those in 1921-22 by C. R. Cleveland, J. J. Culver and the 
writer; those in 1922-23 by C. R. Cleveland and the writer. Most of 
the counts were made by C. R. Cleveland and the writer, but material 
assistance was secured from J. J. Culver, W. P. Flint, and B. A. Porter 
in making supplementary counts as a check. 
Results: We have concluded from these tests and many scattered 
observations, that the dry lime-sulphur is inefficient against the San 
Jose scale as it occurs at the present time in Southern Indiana when 
used at label strength. The liquid concentrate proved ineffective under 
the conditions which have prevailed in Southern Indiana the past few 
years. These results are corroborated by results secured where the 
scale could not be checked even when 1-6 strengths were used thorough¬ 
ly. Even with a 90 per cent kill, the 10 per cent live scales on moder- 
