scales, while every badly infested tree was either entirely freed or the 

 infestation so reduced as to place the tree in the list of those slightly 

 infested. An advantage in spraying which this wash also has, is 

 that it turns yellowish-white as it dries, so that any places overlooked 

 can easily be found and sprayed within a few mintes after the first 

 application. It stayed on the trees so as to be noticeable for two 

 months, even though heavy rains fell frequently during this time and 

 particularly during the first two weeks after it was applied. The 

 results obtained with the lime, sulphur and salt wash were so satis- 

 factory that a further study of it, its methods of preparation and its 

 results will be made the coming spring. Experiments in other states 

 indicate that the salt may be omitted without afi^ecting its value in 

 any way. 



3. Materials Sent for Trial. 



Bowker's Disinfectant. This substance was applied diluted with 

 water in three proportions. At the rate of one gallon of Disinfec- 

 tant to ten gallons of water it killed many of the scales, but failed to 

 entirely clear any of the trees. The condition of infestation, how- 

 ever was reduced from bad to slight. Where the Disinfectant was 

 applied at the rate of one to twenty-five and one to fifty, the results 

 were not as satisfactory. That concentrated applications of this 

 material will kill at-least a portion of the scales is evident, but it is 

 less efficient in this regard than some of the others used. 



Walker's Wood Creosote Oil. This was obtained at the sugges- 

 tion of a gentleman who claimed to have successfully freed plants 

 from the Oyster-shell scale by its use. It was applied with a brush 

 by painting all parts of the tree, and was successful in killing both 

 scales and trees. 



Walker's Creosote Disinfectant. This substance, sent for trial by 

 the Walker Chemical Works, Harrison, N. J., appeared to destroy 

 some of the scales on the trees to which it was applied but failed to 

 kill more than a small percentage. 



Black Soluble Insecticide Soap, sold by V. Casazza & Bro., 190- 

 192 Prince St., New York, appeared to have no effect on the scales. 

 When received it had corroded the tin cans in which it was shipped, 

 to a considerable extent, and the agents claim that this may have 

 had an effect upon its insecticidal value. 



