rayed last spring first with lime-sulphur, and my
sprayer worked fine. I had a hand sprayer, but when I mixed the
lime-sulphur and the arsenate of lead it almost stopped up. What was the
matter, was it the mixture or the sprayer?

Mr. Dunlap: Most all of these mixtures when you put them together ought
to be more or less diluted.

Mr. Sauter: How long must they stand dissolved?

Mr. Dunlap: The lime-sulphur is in solution, and if you have that in
your water tank the best way is to put your arsenate of lead in in the
form of a paste and dilute it until you get it so that there is about
two pounds of arsenate of lead to a gallon of water, and with that you
can pour it into your tank and if you have an agitator in there you
won't have any difficulty with it. In the early days of spraying when we
used blue vitriol with lime, we tried a concentrated solution of the
blue vitriol and lime and found we couldn't get it through the strainer,
but by diluting it, putting our blue vitriol in one tank, and putting
half of our water that we intended putting in the sprayer in that, and
taking another tank and putting half the water and the lime in that and
then putting the two together in this diluted solution, we didn't have
any trouble, but in putting in the concentrated solutions together we
had a sticky mess and all sorts of trouble. It would not go through the
strainer.

Mr. Sauter: How does the powdered arsenate compare with the paste?

Mr. Dunlap: I haven't had any personal experience with the powder and I
would have to refer you to the experiment station.

Mr. Sauter: Powder mixes a great deal easier.

Mr. Dunlap: Yes, sir. I had this experience with hydrated lime. The
hydrated lime, as you know, comes in sacks and in the form of flour, and
all you have to do is just to pour that into the water, and there is no
trouble about mixing it at all. With lime from barrels that we used for
making bordeaux, we would slake it and run it off into barrels, and
there we diluted it so that we got two pounds to every gallon of water,
our stock solution. But with the hydrated lime we can take so much out,
so much by weight, and put it into the tank, and it dissolves right in
the water. But we found this difficulty as between slaked lime and the
hydrated lime. While the hydrated is very nice to use it did not possess
the adhesive quality that the regular slaked lime did, and it would wash
off the trees and take the vitriol solution with i