392 Report of the Entomologists of tiie 



tests. 



This resin lime mixture with Paris green added was first tested 

 in 1895 on elm trees for the elm leaf beetle. The mixture was 

 applied but once, about June 10, both sides of the leaves being 

 thoroughly sprayed. On August 1 the leaves of the sprayed 

 trees were nearly perfect, while those on adjoining unsprayed 

 trees consisted principally of veins and midribs to indicate what 

 had once been leaves. 



September 13, 1895, the resin lime mixture, with Paris green 

 added, was used to spray a patch of rutabagas (smooth leaved, or 

 Swedish, turnips). This patch was badly infested with the cab- 

 bage worm. 6 Three days after treatment not a living worm could 

 be found on the patch. Although heavy rains followed the spray- 

 ing, enough of the mixture adhered' to the leaves so that no later 

 broods of the worms succeeded in getting a foothold on the sprayed 

 plants. 



ON CABBAGE. 



In 1896 two separate tests of the resin lime mixture with Paris 

 green were made on cabbage against the cabbage looper and the 

 cabbage worm. These tests were carried out on separate farms. 



First test. — ..The first test was made on medium late cabbage, a 

 mixture of Savoy, Flat Dutch, and Red Dutch varieties, part of 

 which had commenced to head. For the sake of comparison Bor- 

 deaux mixture was used on part of the plats. On August 26 the 

 plats were treated as follows: 



Plat 1. Six rows, sprayed with resin lime mixture and Paris green. 



Six rows, check. 

 Plat 2. Six rows, sprayed with Bordeaux mixture. 7 



Six rows, check. 



6 Throughout this bulletin the term " cabbage worm " is used for " im- 

 ported, or European, cabbage worm " (Picris rapae) also " cabbagedooper '* 

 or simply "looper" is used instead of "cabbage Plusia" (Plusia brassicae) . 



7 Bordeaux mixture used alone adhered only in the folds of the Savoy 

 varieties, but where resin mixture was added it adhered as well as did the 

 resin lime mixture. 



