1907.] PUBLIC DOCUMENT — No. 33. 177 



if people will persist in ignoring the proper directions for 

 applying the substance, as there is scarcely a remedy on the 

 market which will not produce injurious effects if used in- 

 judiciously. 



Anti-Moth. — This substance was used considerably in the 

 summer of 1905 as a tree-banding material. It is a dark- 

 colored, pasty substance, suggestive of wheel grease, and is 

 applied directly to the bark. There were many instances 

 observed where it was causing injury by soaking through the 

 large, thick, rough-bark trees, as well as small, thin-bark ones. 

 The trees which came under our notice had been treated only 

 a few weeks with this substance, but our observations were 

 suiBcient to show that this constitutes a dangerous substance 

 to apply directly to the bark of trees. Various small 

 herbaceous plants banded with Anti-Moth died in a few days. 



Eureka Tree Paste. — This substance as a banding ma- 

 terial is not so universally employed as those previously 

 mentioned, therefore our observations were limited in regard 

 to its effects on trees. Moreover, this material, at the time our 

 observations were made, had been on trees for only a brief 

 period of time, consequently, the ultimate effects on the trees 

 have not been observed by us. This substance resein.bles Anti- 

 Moth, and is applied in the same manner. From the iiature 

 of the material, and its effects upon the stems of herbaceous 

 plants, it cannot be recommended as a safe banding substance. 

 Our experiments on herbaceous plants show that it is equally 

 as injurious as the substance previously mentioned. 



Raupenleim and Dendrotene. — These have been used as 

 banding materials, although we have seen no authentic in- 

 stances where they have been applied to trees in the vicinity 

 of Boston during the past year. Rauj^enleim is a well-kno^vn 

 German banding material, and Bodlime is supposed to be in 

 many respects similar to it. Both, as far as we can learn, 

 have about the same effects on vegetable tissue; that is, they 

 injure it. Raupenleim was previously used by the Gypsy 

 Moth Commission in large quantities. Dendrolene is an 

 American product, apparently similar to Raupenleim in every 

 way, both being crude petroleum products. 



Razzle Dazzle. — During the past year our attention has 



