REPORT OF THE ENTOMOLOGIST. 571 



injiTred "by wash. November 4, on careful examination only a few young scales 

 could be found. 



Experiment 72. Tobacco soap 68. 



Soap, 2 pints; water, 1 gallon. Applied September 3 on thickly infested and nearly 

 dead tree. September 22, only about three-fourtlis of the scales killed. October 5, 

 living scales of all sizes present, but not abundant. 



Experiment 73. Tobacco soap 68. 



Soap, 4 pints; water, 1 gallon. Applied September 3 on small and sickly tree: 

 some of the branches already killed by scales. September 7, scales not yet all dead; 

 tips of young shoots somewhat injured, and a few of the old leaves dropj^ing. Sep- 

 tember 22, no living scales; tree recovering. October 5, not a single scale could be 

 found on most careful examination; tree in fine condition, gi'owing vigorously. 



Experiment 82. Soap 77. 



Soap, i pint; water, 1 gallon. Applied September 9. September 18, only a small 

 part of the scales killed. October 5, about four-fifths of the scales dead. 



Experiment 83. Soap 77. 



Soap, 1^ pints; water, 1 gallon. Applied September 9. September 18, all scales 

 killed; not the slightest uajury done to tree by wash. October 5, not a living scale 

 could be found; tree in fine condition. 



Experiment 95. Tobacco soap 92, 



Soap, 1 pint; water, 1 gallon. Applied September 18. October 5, scales nearly 

 all killed; young hatching quite abundantly. October 28, no hving adults; young 

 numerous. 



Experiment 96. Tobacco soap 92. 



Soap, 3 pints; water, 1 gallon. Applied September 18. October 5, a few gravid 

 females living; a few young hatching. October 28, only young scales could be 

 found, but these were quite numerous; tree in good condition. 



Experiment 97. Tobacco soap 92. 



Soap, 3 pints; water, 1 gallon. Applied September 18. September 24, tree not 

 injured. October 11, all scales dry; no young could be found. 



Experiment 98. Resin soap 88. 



Soap, 1 pint; water, 1 gallon. Applied September 18. September 24, scales dying 

 slowly; blossoms and budding leaves not injured. October 5, occasionally one 

 gravid female living; very few young. 



Experiment 105. Eesin soap 99. 



Soap, 1 pint; water, 1 gallon. Applied September 27. October 5, scales appar- 

 ently all killed; found two newly -formed young. October 11, old scales all dead; 

 young quite numerous. 



Experiment 106. Resin soap 99. 



Soap, 2 pints; water, 1 gallon. Applied September 27. October 5, scales appar- 

 ently all dead; have changed in color; a few leaves dropping. October 11, scales all 

 killed; not a single young scale could be found; tree not injured. 



Experiment 107. Resin soap 99. 



Soap, 4 pints; water, 1 gallon. Applied September 27. October 5. all scales dis- 

 colored; not yet dry; leaves dropping. October 7, leaves still dropping. October 

 11, leaves have ceased dropping; all scales dead; no yomig. October 28, not a liv- 

 ing scale could be found; tree in good condition. 



Experiment 127. Resin soap 120. 



Soap, 1 pint; water, 1 gallon. Applied October 4. October 11. all young and 

 nearly all old scales dry; found two moving young. October 16, scales all dead. 

 November 4, occasionally one young scale. 



Experiment 128. Resin soap 120. 



Soap, 2 pmts; water, 1 gallon. Applied October 4. October 11. all scales dead 

 and dry; tree not in the least injured. On the most careful examination, October 



