REPORTS OF DISTRICT AND LOCAL SOCIETIES. 533 



opinion that curculio live from year to year for several years. Of all the 

 remedies tried, the only sure one is jarring upon a sheet. Some practice 

 spraying. Prof, Cook has never been able to destroy all of them by spray- 

 ing. It is only a partial remedy. When we spray peaches we must be 

 more careful. I think one pound of Paris green to 200 gallons of wate: 

 would be strong enough. [Mr. Morrill said that Prof. Cook had come to 

 the conclusion that the peach foliage would not stand poison strong 

 enough to have any effect on the curculio.] You must be very careful 

 about jarring cherry trees, they are so tender. The Ransom process 

 (placing chips, etc., on the ground, as traps) is a good remedy if all would 

 adopt it. First remove all rubbish from around the tree. The aphides 

 suck the juices. Spraying does not kill them. The only remedy for 

 black-knot is cutting off the affected limbs. But there are insect friends. 

 I have discovered millions of ladybugs on the edge of the beach. They 

 ascended the bluffs and went to business and destroyed the aphides. It is 

 only by the combined efforts of fruitgrowers that some of these enemies 

 -can be held in check. Without these friends and certain fungi we could 

 not live. 



W. L. George asked about spraying apple trees. 



Mr. Cook: I would not spray when they are in blossom, but would 

 very soon after ; and a second time, about ten days after the first spraying, 

 if there are no rains. If it rains, spray again soon after. 



Mr. Woodruff: Have managed the tent-caterpillar successfully with 

 a swab on a pole and strong soap-suds. 



W. A. Smith : I would advise to not spray apple trees with a solution 

 stronger than one pound of poison to 200 gallons of water, and even then 

 you will destroy the foliage if you do not do it right. I have taken five or 

 six heavy crops of plums where I sprayed. I think the cherry leaf will 

 stand as strong poison as the apple will. So few pears are stung that it 

 does not pay to spray them. Use the same strength of solution for apples, 

 pears, and plums. Suppose we try spraying on our peaches, one pound to 

 500 gallons. 



Mr. Cook: I think, from my experience, that the cherry and the plum 

 will not stand as much as the apple. 



Mr. Judson: I have sprayed with Paris green, London purple, and 

 arsenic. The Baldwins are the most easily injured. Spraying (one pound 

 to 200 gallons) worked well on plums and cherries, but killed some 

 peaches. I would not use stronger than one pound to 400 or 500 gallons 

 of water. 



Mr. Harrington: Coal ashes for plums is a good remedy. 



J. H. Watson: A certain party had killed $1,000 worth of apple trees 

 by spraying, and I think that we can kill the foliage with cold water alone, 

 without any poison. 



Several persons cited instances where cold water had killed trees. 



Mr. Morrill : Prof. Cook says that the peach borer's eggs are deposited 

 about from July 1 to 6 or 8. Remove the earth and wrap tarred paper 

 around the* trees, about six or eight inches high, and leave it there. 

 Fasten it with a tack; or tack a screen around the body of the tree; or take 

 slaked lime (one bushel to one pint of carbolic acid) and put a handful 

 around the tree about July 1. Another remedy: When you " grub " 

 your trees, carry a bar of hard soap and rub it into the tree. Another 

 insect is the currant borer. The saw-fly deposits its egg' at the junction 

 of the leaf and stem. It bores in and works up or down, and comes out 



