396 ANNUAL, REPORT OF THE Off. Doc. 



members of the Board in their efforts to destroy the San Jos6 Scale. 

 My own idea is that the farmer is entitled to something that will 

 destroy it as cheaply as possible, and as thoroughly, at the same 

 time. 



We do know that there is a great deal of difficulty in the prepara- 

 tion of the lime and sulphur mixture. 1 am not going to talk 

 against it; I use it myself; but I find that there are a great many 

 people who have a great deal of trouble in its preparation, and they 

 are sincere in their doubts as to its efficacy. For instance, one man 

 told me that while he knew the color of the lime and sulphur wash, 

 when properly made, should be a dark brick brown, when he pre- 

 pared it, it came green. I asked him what lime he used, and he said 

 he used Magnesium Lime. That explained it. It was just as effica- 

 cious in destroying the scale as though made of calcium lime, but 

 the color gave the man some trouble. 



A number of experiment stations have made formulas for 

 soluble oils, and have issued bulletins for their preparation, but I 

 doubt if they are any more simple in their preparation than the 

 lime and sulphur mixture. Now, take this, for instance: Carbolic 

 Acid, 2 quarts; Fish Oil, 2^ quarts; Caustic Soda, 1 pound. Heat 

 to 3U0 degrees Fahrenheit, and after the mixture is taken away 

 from the fire, add 3^ quarts of Crude Petroleum and 5 quarts of 

 water. This substance we call the Emulsifier, the part of the mix- 

 ture that will give it uniformity. The other part of that mixture 

 is made thus: 1 part water, 8 parts Emulsifier, 16 parts Crude Pe- 

 troleum, 4 parts Rosin Oil. Mix thoroughly together, and you have a 

 twenty-quart soluble oil. 



Now, I would like to know whether that is easier to make than 

 the lime and sulphur wash? It is certainly more difficult. There- 

 fore, the soluble oils do not help matters very much. You know 

 very well that the average farmer would not go to all that trouble 

 and expense. So, in order to see whether there might not be some 

 other remedy for the San Jos6 Scale, besides these soluble oils so 

 difficult to prepare, and the lime and sulphur mixture, not much less 

 so, we tried the following: 3 pounds of light soap (any soap that 

 would float in water; I would not recommend any particular soap), 

 10 gallons water; heat the substance in the air, and make a solution; 

 then add 15 gallons coal oil. 



After that mixture is thoroughly emulsified, you can make out of 

 that twenty gallons, one hundred gallons of spray, and apply it. I 

 am glad to say that with us it had the desired effect. It killed the 

 San Jos^ Scale. 



Then we did a little more work along this line. You know the 

 lime and sulphur mixture is credited with having fungus effects 

 also, and in order to determine whether this same principle could 

 not be applied, we made a mixture something similar to the one 

 we had already made; we took 15 gallons coal oil, and with it we 

 mixed 8 ounces Carbolic Acid. 



This we dissolved with one pound, or you can say, two or three 

 pounds, as you like, but I prefer two pounds of the soap that we 

 have already talked about, and sprayed it, and it had the desired 

 effect. 



