372 



Experiment 5 : 



October 25, twice sumiuer streugtli. This experiment was inelfective, the resin 

 having separated ont somewhat, and the wash was therefore much weaker 

 than intended. Tree afterwards snbjected to the general treatment given the 

 orchard. 

 Experiment 33: 



.laiuiary 23, same strength as last; Marcli 11, fatal to 7."> per cent of the scales. 

 Tree afterw;n<l8 subjected to general treatment given the orchard. 



Ki'rosciie oiJ. 

 Experiment 42: 



January 23, application made to two trees, one badly incriisted with scales, 

 the other a vigorous tree, less infested. March 11, fatal to all the scales; May 

 4, both trees dead. 



Kerosene emulsion. 

 Experiment 23 : 



December l(i, undiluted emulsion; January 17, fatal to 90 per cent of the scales, 

 a few on terminals apparently living; May 4, all scales dead except in isolated 

 spots, evidently wliei'e the wash did not reach. Tree dead or dying, except 

 one limb, which is in leaf and fruit, but this also will probably not survive the 

 present season. This result due partly to the wash, although greatly assisted 

 by the dense scale incrustation. 

 Experiment 38: 



January 23, same strength as last; March 11, fatal to all scales; May 4, tree dead, 

 wdth the exception of one or two branches, which are making feeble effort to 

 leaf out. Tree originally badly infested, but not enough so, to have caused 

 death, which must soon result. 

 Exjieriment 24 : 



December 16, emulsion diluted with 1 part water; January 17, fatal to 80 per 

 cent of the scales; May 4, only some half dozen scales found after careful 

 examination; aliout 98 per cent killed; tree in full leaf and fruit. 

 Experiment 39: 



January 23, same strengtli as last; March 11, fatal to 9") per cent of the scales. 

 Part of the tree vigorous, uninjured, and in full leaf, with some fruit; re- 

 mainder dead, probably from the effect of the scales. Some few living scales 

 on terminals, perhaps 5 i^er cent. 

 Experiment 25 : 



December 16, emulsion diluted with 2 parts water; January 17, fatal to 50 per 

 cent of the scales. Tree afterwards subjected to general treatment given the 

 orchard. 

 Experiment 40 : 



January 23, same strength as last; March 11, fatal to 75 per cent of the scales; 

 on some parts of the tree all the scales were killed; ilay 4, tree dead, prolmbly 

 from effect of scales and borer. Effects of latter were very marked about base 

 of tree. The tree was also densely incrusted with scales. 

 Experiment 26: 



December 16, emulsion diluted with 3 parts water; .lanuary 17, fatal to about 

 30 per cent of the scales ; tree afterwards subjected to general treatment given 

 orchard. 

 Experiment 41 : 



January 23, same strength as last; March 11, fatal to 75 per cent of scales; May 

 4, tree dead, with the exception of new shoot of last year's growth from near 

 base ; scales dead on this branch, which was not in very healthy condition antl 

 the experiment has therefore little value. 

 Experiment 3: 



October 25, emulsion diluted with 4 parts water; November 17, not very effect- 

 ive; tree afterwards subjected to general treatment given orchard. 



