No. 4.] INSECTICIDES AND FUNGICIDES. 213 



Question. If the Bordeaux mixture is applied to pota- 

 toes, would an ordinary shower wash it off? 



Professor Maynard. If properly made, one spraying 

 will be visible nearly all summer ; but as the plant grows 

 new leaves unfold, and there is a source of danger. 



QuESTioisr. Does the fungus attack both sides of the 

 potato leaf? 



Professor Maynard. Yes, but usually it is found on the 

 under side. 



Question. Are these spraying pumps sufficiently pow- 

 erful to spray the highest elms? 



Professor Maynard. Not without carrying the hose up 

 onto the tree. 



]Mr. LuNT. Some years ago the leaves of my plum tree 

 were badly eaten by the May beetle. They fed only by 

 night, burrowing in the ground during the day. I found 

 also that they did not stick to one tree, but would be on one 

 one nig'ht and the next night mi":ht attack one at a consider- 

 able distance from the first. On this account it would be 

 difficult to kill them by spraying. I also noticed them on 

 forest trees near by. Ash trees were completely stripped 

 of their foliage. Can you suggest a remedy for this pest? 



Professor Maynard. No effectual remedy has been found 

 for the jNIay beetle, or the June beetle, as it is usually called. 

 They work upon the chestnut, the elm, the ash, the hickory, 

 as well as upon the plum, and seem sometimes to be every- 

 where in immense numbers. Sometimes you may find their 

 larvae so numerous in turf land that you can dig them out 

 by the bushel. Mr. Hunnewell of Wellesley had such an 

 experience. 



The Chairman. Some fifteen years ago I had charge of a 

 fine lawn that had been made some five or six years. The 

 creatures were numerous enough to almost destroy it ; it 

 seemed perfectl}' bare of all vegetation. I decided to wet it 

 down thoroughly, as we had an abundance of water, TVe 

 then took pounders and pounded it down well, so that the 

 sod was driven into the ground. In a few days green grass 

 appeared and the lawn was saved. Whether the pounding 

 killed the larvre I do not know, but the experiment was a 

 success. 



