66 STATE POMOLOGICAL SOCIETY. 



It comes to ns under a pressure of a thousand pounds to the 

 square inch and sometimes higher. It can be obtained in Hart- 

 ford or Boston, perhaps nearer. You can own these tanks 

 vourself or rent them of the manufacturer. In the latter case 

 you pay a httle more for the gas. It works beautifully as far 

 as we have used it. We haven't had to put our machine into 

 the sulphur and lime yet. but for Bordeaux and all the ordinary 

 emulsions it certainly works beautifully. We have not limited 

 ourselves quite so much in help as they tell about. We have a 

 man to drive the team, turn the agitator and watch the gas 

 itself, two to handle hose. The tank empty weighs about five 

 or six hundred pounds. By the time it is filled, with the gas 

 tank and everything on it, there is about fifteen hundred pounds 

 on the wagon. That is for loo gallons. They make tanks for 

 50, 100, 150 and 200. I think. A hundred is large enough for 

 most ordinary purposes. 



With our high pressure we find we can use less -and less and 

 less of the copper sulphate making it cheaper and still effective. 

 We used this year about three pounds to fifty gallons — we had 

 previously used five in a barrel — getting just as good results in 

 every respect. It puts it on finer and closer into the leaves and 

 trees generally, so the same material will go farther. We are 

 going to have an easier preparation to handle, experiments are 

 being made along this line continually. You say you don't have 

 the San Jose scale. If you have not, you have no use for 

 sulphur and lime and you are fortunate. It is not pleasant stuff 

 to undertake to handle. We are going to have other materials- 

 that will take care of the San Jose scale without using sulphur 

 and lime. 



Question : Won't you tell us how you use the sulphur and 

 lime? 



Prof. GuLLEY : If you want to make sulphur and lime mix- 

 ture, start a fire and in a kettle put twenty pounds of fresh,, 

 unslaked lime, with three or four pails full of hot water to slake 

 it. Let it boil slowly, then add fifteen pounds of flowers of sul- 

 phur, adding more water all the while. Boil it an hour, during 

 which time add 8 pounds of salt. It should then be about the 

 color of an orange. Add sufficient water to make fifty gallons. 

 You will in the end have a material of a wine color. Then you 

 go out, and if your machine does not get clogged, you will do a 



