674 Agricultural Experiment Station, Ithaca, N. Y, 



How to prevent them from getting to the huds. — This can be 

 accomplished in several different ways. 



Some have used coal-tar for this purpose, painting a band of it 

 around the trunks of the trees ; it has killed some young trees and 

 is not effectual unless renewed every few days. 



Another sticky substance, known as Caterpillar Lime ("Rau- 

 penleim," a German product), is now coming into use in this 

 country and was tested on Michigan peach trees last spring. Mr. 

 G. C. Davis, the experimenter, reported that "it worked nicely 

 except on very cool nights, when it was apt to become a little too 

 stiff and then the cutworms would scramble over." It is a black 

 paste with a strong tar-like odor ; a good thick band of it on the 

 trunk of a tree will remain sticky for weeks, and rains do not affect 

 it. It can be obtained of Messrs. Wm. Menzel & Son, 64 Broad 

 street, JSew York City, for $3.75 per keg of 25 pounds; a pound 

 will cover the whole trunk of a tree four or live inches in diam- 

 eter. A much cheaper, and nearly as effective, substance has 

 recently been compounded by Prof. F. L. Nason, Kew Brunswick, 

 K. J. It is known as " Dendrolene," and can be obtained of the 

 maker for 6 cents per pound in lots of 25 to 50 pounds. Either 

 substance gives promise of being a verj' cheap and effective means 

 of preventing cutworms from getting at the buds of trees or grape- 

 vines. 



A mechanical device which is oftenest recommended is a tube of 

 tin fitted around the tree in some such way as is shown in Fig. 146. 

 In earlier accounts this is termed " an effectual estopper to further 

 proceedings." We have not tried it nor seen it in use, but Mr. 

 Davis experimented with it in Michigan last spring, and he reports 

 "the tin collar is but little better than nothing. The cutworm, 

 when it comes to the collar, will travel around until it comes to 

 the lap, or where the two ends meet, and then it climbs up almost 

 as readily as on the bark. It is more difficult to fit to the tree 

 than a band, and is more expensive." This method should thus 

 receive no further attention, as its efficiency is very doubtful, and 

 here are, also, other simpler, cheaper and more effective devices. 



A stiff, smooth paper, several inches wide, wound around a tree, 

 tied tightly at the top and pulled out slightly at the bottom to give 

 it a funnel shape, has been found quite successful. "We devised a 

 tarred paper protector on the same plan as Mr. Goff's pads for the 



