92 N. L. ENTOMOLOGICAL SOCIETY. 



put on the second spray, which goes on next before the blossoms, or when the 

 first Gravensteins begin to show pink, — using an excess of poison as men- 

 tioned above. Either of these changes would result in a heavily poisoned 

 spray being applied within two or three days of the emergence of the 

 young larvae from the egg. Which spray should be moved, must be de- 

 termined by the grower in his own orchard, as he must be governed by 

 the other insects or diseases present. In case the orchard is badly in- 

 fested with budmoth, the first spray should go on on time, while the sec- 

 ond spray can go on a day or so earlier with no bad effect in budmoth 

 control. In case the orchard is infested with the Green Apple bug, the 

 second spray would need to go on as near before the opening of the blos- 

 soms as possible, while the first spray would be retarded two or three 

 days with no reduction in control of Green Apple Bug. 



Tanglefoot Bands. 



The ideal method of controlling Canker Worm is of course by means 

 of tanglefoot bands placed about the tree between Oct. 25 and Nov. 1. 

 The band should be about three inches wide, and in the case of commer- 

 cial tree tanglefoot or the homemade Castor oil and rosin mixture, may 

 be placed directly on the bark of the tree with no danger of injury. 



In experimental work it has been found that extra thin commercial 

 Tree Tanglefoot will remain sticky and act as an effective barrier longer 

 than any material at present known to the writer. If it is desired to use, 

 the home-made Tanglefoot, 5 lbs. rosin and 3 pints of Castor oil heated 

 together should prove effective; if the season is cold more Castor Oil 

 should be added, so that the mixture will remain sticky. This is usually 

 inferior in lasting qualities to the commercial article, but has the advan- 

 tage of costing less. 



