No. 7. DEPARTMENT OF AGRICULTURE. 547 



outfits wherewith they might do successful worli. But neverthe- 

 less even with their ''tin cups" they are doing some good successfnl 

 work and many trees in Rebersburg have taken on a new lease of 

 life. Some trees that were almost dead are now thrifty and as a 

 result I could name a score of men here who are thoroughly con- 

 vinced of the benefits of lime and sulphur. 



"Very respectfully yours, 



"Charles A. Heiss." 



A Member. — What age were the trees that were spraj-ed at a 

 cost of only thirty dollars for eleven hundred trees? 



PROF. SURFACE. — I do not know but they were bearing trees. 



MR. HALE.— What kind of trees were they? 



PROF. SURFACE.— He does not say but I think they were com- 

 paratively young trees. 



Now I am to speak a few minutes about scale remedies. We have 

 all shades or grades of degrees of efficiency from those which are ab- 

 solutely worthless to those which are very good under some condi- 

 tions. I feel it my duty to give expression to the results of my in- 

 vestigation of a maLerial called "Scale-kill" made and sold at 

 Waynesboro, Pennsylvania. It is a powder intended to be put into 

 holes bored into the trees. I had it analyzed and found it to consist 

 of powdered sulphur, rosin and gun-powder. It cost the manufac- 

 turers, perhaps, four cents per pound and they sell it at one dollar 

 per pound. After I made a conscientious effort to learn if it would 

 kill San Jos^ Scale, and found that it would not, we inspected several 

 trees where it had been used and found that fruit growers were like- 

 wise having no satisfactory results with this material. I learned 

 that the originator has sold his claim to a local druggist and moved 

 west. It is still being made and sold there and sent into different 

 counties of the State and different states of the Union. One 

 dealer in Chambersburg said that he sold forty pounds in one week. 

 The makers claim that the reason it has not previously been suc- 

 cessful is that the holes in the trees were bored in such direction 

 that instead of settling out and resting on the sap wood, where the 

 growth takes place, it settled in toward the heart of the tree and 

 consequently was not taken up into the circulation with the sap. 

 They now say that the thing to do is to bore the hole upward at an 

 angle and put the powder in and then cover it with a piece of tin or 

 something of that kind and let the material slide outwardly in the 

 hole far enough to let it rest on the sap wood, with the thought 

 that it would be taken up with the sap. 



I should mention another material, namely: caustic soda dissolved 

 in water which was brought into prominence in this State by publi- 

 cation in a very reliable agricultural paper, namely: The Farm 

 Journal, by the publication of a prize article on the San Jos^ Scale 

 and its remedies. Practical men have told me that they have lost 

 their fruit and trees by depending upon it as it did not kill the scale. 



Another preparation which was given considerable attention in 

 Delaware was "Limeoid" which is a kind of. kerosene emulsion made 

 by stirring finely powdered or selected lime into kerosene oil and 

 then mixing it with water. It was then to be sprayed on the trees 



