(Next slide.) This is a picture of maggot injury on black walnut. They don't seem to like the black walnuts as well as they do the Persian walnut and butternut. (Next slide.) This is one of the hybrid English walnuts that is located on the grounds at the Geneva Experiment Station. It's quite a large tree. I don't know the name of it. Maybe you do, George. MR. SLATE: It has no name. DR. GAMBRELL: It's not very fruitful, anyway, is it? But it is also susceptible to injury. (Next slide.) This photograph was made quite a few years ago, and that explains some of the lines around it, but at any rate, this pile of nuts shows the damaged ones that came from one tree, and also the ones that were not infested. In other words, about two-thirds of the nuts on that particular tree had been infested with maggots. (Next slide.) That's a close-up view and is the type of thing I was trying to describe to you earlier where the shucks dry up and stick to the nut so that you cannot remove them. Those on the left, of course, would be absolutely no good for commercial purposes. (Next slide.) Now, I suppose you are all interested in this matter of control. Unfortunately, I must admit that I have not worked on the walnut husk maggots very much in the last 15 or 20 years. You may recall that we had a severe freeze back in 1933 or 1934, which took out quite a lot of our Persian walnuts in Western New York, and only the hardier trees remained. But prior to that time we had been getting numerous complaints, from growers about injury from walnut husk maggots, and we did some work at that time and also worked with the Farm Bureau people in the counties where walnuts were grown fairly commonly. In many cases these Persian walnuts were grown on fruit farms where they also have apples and other fruits. So that in those cases it was not a difficult problem to obtain control. We worked out a program whereby, say, beginning about July the 20th to the 25th, at which time quite a few of the flies would have emerged, if the orchardist, when he was going through with his regular spray operation on his fruit trees, would give his walnuts at least two applications at about two weeks intervals, he'd cease to have a maggot problem. That pretty well solved it, as far as they were concerned. But there were also these other plantings where you'd have just a few trees, or possibly one tree in a back yard, something of that sort, which is a little bit more difficult to control.