'jd VI. Entomology. 



ing for the San Jose scale. I think it is very important to make one 

 appHcation in the fall, as the insect is then to be found in all stages 

 from tliose recently hatched to the full-grown insects, and most of 

 them have not yet reached the less vulnerable hibernating condition. 

 I think there is a good deal in the strong pressure used to force the 

 spray into the cracks and crevices of the bark and help it to soak 

 under the scales where it can reach the living msect. It is interest- 

 ing to note here that two rows of trees in the same orchard were 

 sprayed by a State inspector with the lime-sulphur wash, one appli- 

 cation was made in the fall and another in the spring. The results 

 were equally as good as those obtained from the use of Scalecide. 



I obtained equally as good results on a single pear tree in my 

 back yard with two applications of Scalecide, one in the fall and 

 one in the spring, but another fruit-grower who used the material 

 in the same way, but not quite so strong, reports that there are 

 quite a number of living scales on his trees this fall. He thinks 

 he obtained better results with the lime-sulphur mixture. Scalecide 

 at the rate of one part in fifteen of water costs twice as much as 

 the lime-sulphur spray, but it is so much easier to make and agree- 

 able to apply, that if fruit-growers can get practically as good re- 

 sults with it, many of them will gladly go to the extra expeni^. 



M. V. SLINGERLAND, 

 Assistant Professor of Economic Entomology 



