STATE POMOLOGICAL SOCIETY. 103 



arsenic is neutralized in a verj' short time so that it becomes inert." 

 So, taking these two things into consideration, there was no pos- 

 sible ground for fear of using these poisons to any reasonable extent. 

 And a pound to an acre I believe is sufficient at all events, for a tea- 

 spoonful of Paris green, if it is strictly pure, is sufficient for a pail 

 of water, and that would be all sufficient for one tree, and perhaps 

 more than enough unless the tree is of pretty good size. 



Mr. Atherton. Professor Cook recommends the spraying of an 

 orchard with a pound of Paris green to a hundred gallons of water ; 

 and he advised the use of a powerful garden force pump for its 

 application. I would like to inquire how much water you would use 

 to a pound, and what kind of a force pump. And also, as I raise 

 hay in my orchard, would there not be danger of poisoning the hay, 

 as the grass will have grown to a considerable height at the time the 

 poison should be applied? Some of my trees are very large and I 

 know it would take more than one pailful of the solution to spray 

 one of them. 



Mr. Augur. The pump we use is a Whitman fountain pump. 

 Perhaps you know what it is. There are two or three pumps very 

 similar. It is a pump where you just put the hose into the barrel 

 and work it and it throws a fine spray. We like to get somewhere 

 near underneath, so to have the spra^' go up through the tree. As 

 to the amount of poison, I will say, in answer to your question, that 

 when we have mixed it in a barrel we have mixed about eight ounces 

 to a forty gallon cask of water, which would not be very different 

 from what you speak of. But it must be understood that Paris green 

 is not always Paris green. There are three or four brands that are 

 known to the wholesale trade to be strictly pure. If you get one of 

 those brands 3'ou get the pure article. There is one brand that is 

 marked by the deceptive name of "genuine" that is not pure and is 

 not claimed in the trade to be pure. There is a brand called the 

 ''King's County" and another called the "Long Island," all of which 

 represent different degrees of adulteration, so admitted in the trade. 

 It depends very much on whether we are using a strictly pure article 

 or one that is adulterated. I think that eight ounces of strictly pure 

 Paris green to forty or fift}' gallons of water is enough. I know in 

 some instances it has been used so strong as to injure the foliage of 

 the tree. That, of course, we do not want to do ; it is not necessary. 



Mr. Pope. We sprayed quite a portion of our trees last year by 

 placing a barrel in an express wagon, with a force pump in it, and 



