ong.

Mr. Stakman: If you use very strong lime-sulphur you sometimes get such
an effect on both plums and apples. Sometimes the leaves fall, and
almost immediately you get a new crop of leaves.

Mr. M'Clelland: This was in August.

Mr. Stakman: There was a perfect crop of new leaves?

Mr. M'Clelland: Yes, sir.

Mr. Stakman: My only suggestion would be that you used the lime-sulphur
too strong. That might account for it.

Mr. Sauter: I never sprayed until this year. I tried it this year and
with good results. I sprayed my apple trees at the same time, and I
sprayed the plums with the same thing I sprayed the apple trees with. I
had nice plums and nice apples; last year I had hardly any.

Mr. Stakman: What did you use?

Mr. Sauter: Lime-sulphur and some black leaf mixture. I used it on the
plum trees and the apple trees, and afterwards I used arsenate of lead.

Mr. Stakman: You didn't get any injury to the plum trees?

Mr. Sauter: No, sir, we had nice plums.

A Member: I have seventeen plum trees, and I have only sprayed with
kerosene emulsion and the second time put in some Paris green, and I
have never seen any of the brown rot, but there have been a good many of
the black aphids on the plum trees, on the end of the branches. I cut
them off and burned them. I didn't know whether that would be the end of
it or not.

Mr. Ruggles: Why don't you use "black leaf 40," 1/2 pint in 50 gallons
of the spray liquid. It can be used in combination with arsenate of lead
and lime-sulphur or arsenate of lead and Bordeaux mixture.

If you wash them with black leaf 40 it will kill all the aphids. I did
that myself this summer.

A Member: Please give us a little better explanation of what black leaf
40 is.

Mr. Ruggles: It is an extract of tobacco that is for sale by wholesale
drug companies and stores, or you can get it from Kentucky, from the
Tobacco Products Company, at Louisville, Ky., or Grasseli Chemical Co.,
St. Paul. I am not advertising, Mr. President, but they will send you a
small package for seventy-five cents, about half a pint. Of course, that
looks kind of expensive, but it will go a long way. I think possibly it
is the best thing we have to combat lice.

Mr. Stakman: Plum pocket is caused by a fungus which is supposed to
infect mostly when the flower buds are just beginning to swell,
especially in cold, wet weather. Plum pocket causes the fruit to
overgrow and destroys the pit, and big bladder or sack-l