REPORT OF THE ENTOMOLOGIST. 567 



Soap, i pint; water, 1 gallon. Applied October 4 on large tree. Tliree gallons of 

 wash wert' required: only lightly sprayed. Scales died slowly; mother scales left a 

 few fresh eggs. October 14, occasionally one young scale found. 



[All experiments after 120 only lightly spi^ayed.] 



Experiment 121. Soap 120. 



Soap, 1 pint; water, .3 gallons. Applied October 4. Will peneti-ate egg-masses in 

 about 3 minutes. A few of the scales recovered and produced fresh eggs. 



Experiment 122. Resm compound. 



Made of resin, 4 pounds; soda ash (pure carbonate of soda), 1 pound; water to make 

 36 pints of compound; costing 11 cents. 



Compound, 1 pint; water, 3 gallons. Applied October 4. Only penetrated smaller 

 egg-masses. Killed only a few of the smaller scales, and a few eggs only were de- 

 stroyed. 



Experiment 123. Resin compound 122, 



Compound, 1 pint; water, 2 gallons. Applied October 4; did not penetrate egg- 

 masses well, and only about half of them were destroyed. Many mother scales sur- 

 vived. 



Experiment 124. Resin compound 122. 



Compound, 1 pint; water, 1^ gallons. Applied October 4. Penetrated all but the 

 largest egg-masses weU. Some of the mother scales and some eggs escaped. 



Experiment 125. Resin compound 122. 



Compound, 1 pint; water, 1 gallon. Applied October 4. Penetrated all egg-masses 

 well. A few of the mother scales survived and produced fresh eggs. None of the 

 eggs sprayed have hatched. 



Experiment 126. Resin soap 120. 



Soap, 1 pint; water, 4 gallons. Applied October 4. Penetrated only smaller egg- 

 masses. Killed most of the smaller scales, but only a few of the smaller egg-masses 

 were destroyed. 



Experiment 139. Resin compound. 



Made of resin, 4 pounds; common washing soda (carbonate of soda), 3 pounds; 

 water to make 30 pints of compound; costing -J- cent per pmt. 



Compound, 1 pint; water, 2 gallons. Applied October 7. Will penetrate only 

 smaller egg-masses. A few young scales only and small portion of eggs destroyed. 



Experiment 130. Resin compound 129. 



Compound, 1 pint: water, 1^ gallons. Applied October 7. Did not penetrate 

 larger egg-masses. Destroyed all smaller ones and a few of the mother scales. 

 November 4. scales numerous on tree. 



Experiment 131. Resm compound 129. 



Compound, 1 pint: water, 1 gallon. Applied October 7. Penetrated all egg-masses 

 well on slight spraying. October 11, a few mother scales, wliich were protected by 

 fungus, still living. October 14, all scales dead; occasionally a few eggs left among 

 fungus. 



Experiment 134. Resin compound 129. 



Half compound and half water, to see effect on plants. Applied October 7. Will 

 penetrate egg-masses instantly on application. All scales and egg-masses hard on 

 examination two days after; plant as if varnished and sticky. This had disappeared 

 on October 13, leaving the plant in excellent condition, not a leaf having dropped. 



Experiment 135. Resin compound. 



Made of resin, 4 pounds; caustic soda, 1 pound; and water to make 33 pints of 

 compound; costing ^ cent per pint. 



Compound, 1 pint; water, 2 gallons. Applied October 8. Will penetrate only 

 smaller egg-masses on light spraying; many of the mother scales survived and 

 young were numerous November 4. 



Experiment 136. Resin compovmd 135. 



Compound, 1 pint: water, 1^ gallons. Applied October's. Did not penetrate larger 

 egg-masses well on light spraying; many of the mother scales smrvived, and October 

 25 occasionally a single young could be found. 



