Dr. M. B. Waite, of the Federal Insecticide and Fungicide Board, U. S. Department of Agriculture, spoke as follows: DR. WAITE: Some of you may recall that several years ago, when you were meeting here in this hall, I gave you a paper on the nut diseases of the northeastern part of the United States, and it would not be desirable to go over that same ground again. At that time, we took up the bacteriosis of the Persian Walnut, and filbert blight, and I outlined a program of proposed treatment for the filbert blight. It might be interesting to note here that Dr. Morris, and I believe also Mr. Bean, put that treatment into practice with success. The situation still remains, however, that we do not know of diseased plantings of any size. If we find a real plantation of filberts we will be glad to attempt control measures ourselves. I have planted about two dozen filberts and they still remain free from the disease. There are very few local hazel nuts, wild or cultivated, around Washington; but we understand that the few hazel nuts are free from this disease. There are two or three things I wish to mention. One is the repeated inquiries reaching my office with regard to the non-filling of nuts, mostly the cultivated nuts, sometimes the pecan, sometimes the black walnut, and frequently the English walnut. The subject is a complicated one and the disease is not one that we can put under the microscope and diagnose at once. The trouble is due to a complex of varietal and environmental conditions, the effect of the conditions of growth, of soil fertility, temperature, soil, water and humidity, sunshine, etc., on that plant. Very often it is because people get the wrong variety and do not know what they have. They may have an unproductive seedling. On the other hand a good variety may fail to bear in a locality where it is not suited. Very frequently the real lack is in soil fertility. Of course the success of the pecan trees down South around pig pens is an old joke to you gentlemen, but there is truth in that. For good nuts there is often need for a little extra manure or fertilizer, or perhaps both. Sometimes there are rich pockets in the earth where those trees would like to grow, or rich bottom lands which will produce without manure. I think one of the best ways is to fertilize with manure, if possible. Pollination troubles in connection with the non-filling and dropping of the nuts should be thought of.