HORTICULTURAL SOCIETY. 129 



Mr. Thiellman. I have one plum tree on my place that is far 

 ahead of anything else I have ever seen. I like it so well that I 

 took some of the sprouts up and transplanted them into cultivated 

 land. I have also set grafted trees of this variety in the garden, 

 in the very best spot I have on the place, and find that none of 

 them either from sprouts or when grafted are as good as the origi- 

 nal tree; that is, the plums are not so large or so fine. To explain 

 that part, I would say that there is a little stream running near the 

 original tree. 



Mrs. Bonneville. Did you trim that tree? 



Mr. Thiellman. No. 



Mr. Burnett. I had some Minnesota Plums and was troubled 

 with the aphis; so much so that a great many of the trees lost 

 their leaves. Can you give me any idea as to how I can remedy 

 this evil? 



Mr. Harris. They are now using kerosene emulsions for 

 destroying insects upon trees. I cannot give you the formula for 

 that emulsion but it is kerosene mixed with soap and diluted with 

 water and the trees are sprayed with it. We tried another experi- 

 ment in our region this year. There was a man around there with 

 some kind of preparation'which was said to be sure death to any 

 kind of insect life. A [teaspoonful of the preparation in a quart 

 of water was the right amount to apply to trees for the aphis. I 

 saw that applied in La Crosse. I tried it on apple trees on my 

 place and it seemed to'be beneficial. It is something that is sold 

 as sheep clip. 



Prof. Green. The Hubbard formula is the best one for making 



kerosene emulsion. It is composed as follows : 



Kerosene, 2 gallons 67 per cent. 



Common soap or whale oil soap, %. pound, ^33 " " 



Water 1 gallon } 



"Heat the solution of.'soap'and add it boiling hot to the kerosene. 

 Churn the mixture by 'means of a force pump and spray nozzle 

 for five or ten minutes. The emulsion, if perfect, forms a cream 

 which thickens on cooling, and should adhere without oiliness to 

 the surface of glass. Dilute before using one part of the emulsion 

 with nine parts of water. The above formula gives three gallons 

 of emulsion and makes, when diluted thirty gallons of wash." 



I want to ask Mr. Harris why he thinks that plum of Mr. Pat- 

 ton's is a hybrid? 



Mr. Harris. In regard to the Kockford plum I presume Mr. 

 Gaylord knows more about it than I do. 



Mr. Gaylord. Mr. Green is the proper originator of that plum. 

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