No. 4.] INSECTICIDES AND FUNGICIDES. 217 



Mr. TnuRLOW. I have had a great deal of experience 

 with printers' ink. My father had a large orchard forty or 

 fifty years ago, and the canker worms attacked the trees. 

 We tried varions remedies, but it was printers' ink that 

 finally exterminated them. I made a careful estimate of the 

 yearly cost, and it was four cents a tree. The trees are now 

 laru^er and it mii>:ht cost more, but I am sure that eisfht cents 

 a tree would cover the cost now. I think the bands should 

 be put on as early as the middle of October. They certainly 

 do sometimes go up before the first of November. I have tried 

 spraying, but it did not answer the purpose, the worms were 

 not killed, but the leaves were injured ; perhaps the man 

 whom I employed did not understand just how to do it. But 

 I have gone back to the paper bands. Morrill's and Donald's 

 inks are both perhaps equally good. Both have been im- 

 proved, and are sold at a low price. We put the ink in 

 bottles, leave them in the sun during the forenoon, and the 

 heat of the sun will warm the ink so that it will spread 

 easily. We put it on after dinner. It should be applied 

 liberally near the top of the bands, and does not need to be 

 diluted. After a rain or exposure for some time to bright 

 sunshine it needs to be renewed. I should take the bands 

 ofl:' as soon as the insects have o;ot throuoh runnino;. I 

 believe the shade trees of this city can be best protected by 

 printers' ink. They are too tall for spraying, and the cost 

 for large trees will not be great. I do not antagonize im- 

 provements, I believe in spraying; but for myself I think I 

 can manage the canker worm best by the bands of printers' 

 ink. 



Question. Does the estimate of eight cents per tree 

 include the cost of labor ? 



Mr. Thueloav. It includes the cost of everything. 



Mr. . I put on tarred paper this past fall about 



October 1. I caught nothing until the middle of the month, 

 when I began to find it of use. I should think it ought to be 

 put on earlier than November 1. 



Secretary Sessions. These lectures and discussions will 

 be printed in the " Agriculture of Massachusetts" for 1894. 

 The volume will be ready for distribution about April 1. 

 They may be obtained of your Senators and Representativ^es, 



