course, they only put it on the leaves, and the cabbage is a hardy
plant. Air slaked lime is also good, but would have to be applied
several times. With the arsenate you apply it once and kill all the
brood.

Mr. Ludlow: We took them all off of mine one year by using boiling hot
water.

Mr. Moore: Yes, sir; water is very good. The objection is, on a large
scale it is not feasible.

Mr. Miller: Slug shot is very good.

Mr. Moore: Yes, sir; it doesn't contain very much poison, but it is
sufficient to kill the cabbage worm.

Mr. Cadoo: I used just simply wood ashes.

Mr. Moore: The cabbage worm is one that is very easy to handle.

A Member: I have always used salt. I think it makes a more firm and
solid head, that is my theory, I don't know whether I am right or not. I
have been doing that for years.

Mr. Moore: I don't know. I never heard of the treatment with salt until
two or three days ago when several students mentioned that they used
salt. Some people won't use Paris green. There was one case a man said
his wife wouldn't let him do it even if she knew it wasn't poison; she
didn't like the idea of Paris green on cabbage.

Mr. Ingersoll: Is there anything you can suggest to control the yellows
in asters?

Mr. Moore: The yellows in asters has been a problem which has been very
amusing there at the farm. A man sends in an aster to the entomological
department, we examine it and can't find anything that belongs to our
department, and we send it to the plant pathological department, and
they send it back to us. Last year we made a point in every case of
yellows in asters to send some one to investigate and find out what was
going on to produce it. In some cases it seemed to be a fungous disease.
One case I know turned out to be a fungous disease, the very next one
was due to plant lice on the roots of the asters. In that case I don't
think you get quite the distinct yellows of the asters, but rather the
plants wilt and become weak and finally die. That can very easily be
controlled with tobacco extract, pouring it upon the buds of the plants.
We do not know definitely about the yellows. We think it is more or less
of a physiological disease of the plant, not due to an insect. This last
year we have not found any what we would call the true yellows. There is
an insect that produces similar trouble on other plants, a plant bug,
which is hard to secure because it flies away. That is the reason we
have been sendin