40 



Mr. Sonthwick moved a vote of thanks to MissOrmerod for lier excel- 

 lent i)aper. Adopted. 



Mr. Osboru spoke of tlic great value of Miss Ormerod's work against 

 tlie Warble Fly as showing bow combination among workers can bring 

 about almost entire immunity from this pest. Miss Ormerod's plan 

 should be adopted in this country. 



Mr. Fletcher also spoke highly of Miss Ormerod's work in this inves- 

 tigation. 



Mr. Marlatt, however, stated that the plan of gathering the bots 

 from the backs of cattle can only be ijracticed in the East, where the 

 cattle are domestic, and will not pay for the trouble in the West, where 

 the cattle are wild and would have to be roped and thrown. 



Mr. Fletcher thought, however, that the saving of hide value alone 

 would pay for this trouble. 



Mr. Southwick thought that it would be a very easy matter to rope 

 and throw tlie cattle in the West, and considered that it would pay. 



Mr. Osborn called attention to the fact that the majority of Western 

 cattle are sent East and slaughtered so that the bots have no chance of 

 maturing. He insisted upon the ease of stamping this pest out in 

 restricted localities in this manner, since the flies do not migrate to any 

 extent. 



Mr. Kellicott stated that he had known the Warble Fly to be very 

 bad in Oswego County, New York. 



Mr. Lintner stated that it is not a general pest in New York State, 

 but occasionally a local one. Mr. Lintner further stated that Miss 

 Ormerod has proven the Plum to be less susceptible to the arsenites in 

 England than the Apple — a remarkable fact and not at all in accordance 

 with our experience in this country. This difference probably depends 

 upon climate and upon difference in varieties. 



Mr. Southwick suggested the reference of this question to the bot- 

 anists. 



Mr. Fletcher stated that different varieties of plums show with him 

 great difference in susceptibility to this treatment. He spoke of the 

 great variation in the texture of the leaf and in other particulars in 

 the varieties of Plums. Much work must be done in this direction. 

 He also mentioned the great susceptibility of the Peach. 



Mr. Alwood mentioned the fact that the addition of lime water to 

 the arsenical mixture absolutely prevents the burning of the foliage. 



Mr. Cook had found the Bot-fly attack much less in cleared farms 

 than in wooded farms. In regard to the arsenites, he said that an 

 abundance of Aphids and consequent weakening of the vitality of the 

 tree might make it more susceptible. 



Mr. Smith suggested that the water referred to by Miss Ormerod 

 might contain lime s ilts so as to make the application more innocuous. 

 He stated that the chemical reasons for the prevention of injury to 



