232 BOARD OF AGRICULTURE. 



lives upon the under side of the grape-leaf. I find, when a 

 leaf gets fairly expanded, from a score to forty or fifty of 

 these insects upon it. They commence upon the outer edges, 

 and work towards the stem, and destroy the whole tissue, 

 leaving nothing but the skeleton. I resorted to picking them 

 off by hand, and stripping off the leaves, and finally cut off 

 my vines snug to the ground. The insect is about five- 

 eighths of an inch long, and of a greenish color. I don't 

 know any thing about him, except as I have seen him upon 

 my own vines. My grapes this last year were almost covered 

 with them, and they threaten my entire crop. If they should 

 appear another year, I think I shall have to take up every 

 grape-vine I have. I would like to inquire what to do about 

 it. 



Dr. FiSHEPw Do they stand in ranks upon the leaf, like a 

 platoon of soldiers? 



Mr. Beown. Not always. I have seen them that way, 

 and sometimes they are not in such good order as that. 



Dr. Fisher. I was troubled with a worm of that kind 

 some years ago ; but it did not amount to any thing, so that 

 I never gave it much attention. The remedy is perfectly 

 obvious. Take the leaves off that they are on, and destroy 

 them. 



Mr. Brown. I took, the more comprehensive way, and 

 just sawed the vines down. I am willing to sacrifice the few 

 grapes I have, for the benefit of others. If you will give me 

 any advice, I will try the experiment, whatever it may be. 

 He is a troublesome customer, worse than any thing I have 

 ever seen on grapes. 



Dr. Fisher. After you get through with your potato- 

 field, just sprinkle some Paris-green on the top of your 

 leaves. 



Mr. Brown. I have tried that. I don't like Paris-green. 

 I thought I would rather pay about fifty cents upiece for 

 potatoes than raise them by using Paris-green. I never saw 

 a good potato yet that was raised by Paris-green. I used 

 it myself this year, and sold my crop for the most I could 

 get. I don't know what the trouble is, but it is detrimental 

 to potato-vines. I have tried it with flour and plaster. It 

 ■will kill the potato-bug; there is no trouble about that: 

 but what becomes of the potato ? 



