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New York AGricutruraL EXPERIMENT STATION. 147 
-upon which it was used as a preventive of apple scab. A careful 
examination was therefore made in the case of the crab apple 
tree mentioned in the article on “Experiments with Fungicides,” 
with reference to the relative injury from the moth on the sprayed 
and unsprayed parts. The results were purely negative. More 
fruits were found to be infested on the sprayed portion of the tree 
than on the other. 
For the Cabbage Maggot. 
_ At the suggestion of State Entomologist Lintner, potassium 
sulphide was tested for the cabbage maggot, larva of Anthomyia 
Brassice (Bouche). An ounce of it was dissolved in a gallon of 
water at a temperature of about 100° F., and, when cold, two 
teaspoonfuls of the solution were poured aon the stem of each 
plant. , The first application was made May 5, which was before 
the plants had manifested any injury from the maggot. At this 
strength the plants appeared to suffer somewhat, hence the later 
applications, made May 21 and June 5, were reduced to one-fourth 
o an ounce to the gallon, and about a gill of the liquid was poured 
about each plant. On June 6 examination showed that the plants 
were suffering from many live maggots, and there were no indica- 
tions that the treatment has caused any diminution in the number. 
We may conclude, therefore, that while potassium sulphide 
may have no value as a preventive of injury from the codling 
moth or cabbage maggot, its value as a fungicide for the goose- 
berry mildew is enhanced by the fact that it acts as a more or less 
complete repellaxt for the currant worm. 
OTHER APPLICATIONS FOR THE CABBAGE Maaaor. 
™, Besides the test for the cabbage maggot noted in the preceding 
paragraph, trials were made with common salt in solution at the 
rate of four ounces to the gallon, McDougall’s sheep dip diluted 
with five parts of water, the ‘ Zoektein poison” at the rate of an 
ounce to five gallons and kerosene used in its-pure state. The 
results were negative so far as their practical value is concerned. 
The first produced no visible effect, the second apparently failed 
to injure the insects, but was fatal to the plants, while the third 
and fourth were fatal to both. 
