56 THE CONNECTICUT POMOLOGICAL SOCIETY. 



the air under the same pressure as the gas, and the chem- 

 ists tell me there is nothing gained in using the gas, so we 

 might have our little plant and use the air in our cylinder. I 

 do believe the tank might be lined with copper or hard brass, 

 and be strong enough, so we w^ould be sure for all time that 

 there would be no accident, but we are not sure to-day that 

 those tanks put out by the gas companies are so lined. 



Mr. Fenn : What make of Paris green do you use, that 

 you only have to use half a pound to fifty gallons? I use 

 a pound. 



Mr. Derby: The only way I can answer that is that we 

 buy that which is half adulterated, and you probably buy the 

 one that is wholly adulterated. There is one little test given 

 us by the chemist that seems to be very good. You add am- 

 monia to your Paris green and shake it up and let it settle, 

 and it should turn a nice indigo blue, and whatever sediments 

 there are in the bottom is the adulteration. That is only a 

 crude way of testing, and I am no chemist, but that has been 

 given to me as a crude way of testing. 



A Member: I would like to ask why the Strawberry apple 

 and vVinesaps were attacked in preference to any other trees 

 in the orchard ; what makes the difiference in the variety ? I 

 know it is so, for I have had Strawberry apple trees for the 

 last five years, and they have not amounted to anything, and 

 the others have given a pretty fair crop of apples. 



Mr. Derby : That is entirely beyond me, but we know that 

 some varieties of apples are much more liable to be scabby 

 than others — such as the Winesaps, the Strawberry and the 

 Jonathan. We find the same thing all the way through. You 

 know about the apple rust. Now the Winesap is perfectly 

 immune from that disease, but if we have Grime's Golden any- 

 where near we can't get good fruit. We know that the Fa- 

 meuse apple is very subject to scab, and the Alclntosh, too. 



Vice-President Putnam in the chair. 



Mr. Putnam : The next number on the program is the 

 report on injurious insects of the past season. 



