FOURTEENTH ANNUAL MEETING. i6i 



myriads of them, together with the spray, from the side of 

 the trees whence the storm came. On the other side of the 

 trees the spray adhered well with a slight difference in favor 

 of K-L with rosin soap. These mixtures appeared to kill 

 much quicker than the same strengths applied in December. 

 This gives rise to the opinion that the scales had not yet 

 sealed up their winter homes and the mixture could reach 

 them readily. Nine days previous to the spraying a few mov- 

 ing young scales were noticed. Examinations were made at 

 short intervals and the increasing effectiveness of the reme- 

 dies was evident. On November 25 specimens of rough bark 

 plastered with scales were examined and no insects which 

 with certainty could be said to be alive, were found. There 

 was estimated to be less than i per cent, which had not dis- 

 colored and dried up enough to be pronounced absolutely 

 dead. A few days later scattering live scales were found on 

 the smooth bark from which the mixture was washed, so that 

 the estimated efficiency of these mixtures was 95 per cent, for 

 all trees. Since that unusually severe rain storm followed so 

 soon after spraying, it was manifestly unjust to a fair test of 

 the remedies to judge them by such an unusual natural disad- 

 vantage. They must stand on their merits and all of the 

 usual severities and drawbacks of weather conditions are wel- 

 comed. This statement of the case is offered as a justifica- 

 tion for giving these trees a second spraying December i, 

 using the same strengths employed before. On January 10 

 samples of rough bark, smooth bark and short spurs were ex- 

 amined with the following results : — 

 Pear tree sprayed with 25 per cent. K-L made with limoid had 



998-10 per cent, scales dead and 2-10 per cent, alive or 



doubtful. 

 Pear tree sprayed widi 25 per cent. K-L made with limoid had 



998-10 per cent, scales dead and 2-10 per cent, alive or 



doubtful. 

 Pear tree sprayed with 25 per cent. K-L made with dry slaked 



lime had 99 8-10 per cent, scales dead, 2-10 per cent. 



alive or doubtful. 



Of the insects alive or doubtful only a single one showed 

 real evidence of being alive, the others were badly discolored. 



