MR. HARRINGTON: It depends on the conditions that require the airing. For instance a thaw in the winter, or a rainy spell. Again in the summer a long rainy spell. In these cases I open up the box, maybe leave it a couple of hours. DR. SMITH: That kills the mold, two hours' exposure? You never sterilize the inside in any way? MR. HARRINGTON: I never have. It might be a good idea. The mold doesn't seem to affect the scions. EXPERIMENTS AND OBSERVATIONS IN SEARCHING FOR BEST SEEDLING NUT TREES _J. F. Wilkinson, Indiana_ Searching for the best seedling began long before the coming of the white man to America, by Indians and animals and the birds which store nuts for their winter food. This search has always been continued through the nut growing territory by the crows, squirrels and other birds and animals. Go to a pecan grove early in the fall when pecans are ripening and there is no better evidence that a tree is an early ripener and produces a thin shelled nut than to see a bunch of crows feeding from it. The children living near a pecan grove in early fall will go where crows and birds are feeding to gather nuts that are dropped by them, and later, when all trees have ripened their nuts, these children have their favorite trees to gather from. I have seen the little ones around Enterprise, of before school age, that would have a preference and could select from a basket of pecans the ones from their favorite tree. It is surprising how good their judgment is. The hunter also watches this in the early hunting season, going to the earlier ripening hickory and walnut trees, for it is there he will find the squirrels feeding. My own experience in gathering pecans dates back to my first school days, for there were scores of pecans trees near the school building, and as soon as I was large enough to climb a tree I spent many days each fall gathering nuts and soon had a fair knowledge of all trees for a radius of several miles around. The first trees of the now named varieties, the Indiana and Busseron, were located and brought to notice by the late Mason J. Niblack. In the summer of 1910 my life-long friend, Mr. T. P. Littlepage, while on a vacation, was camping on the Ohio river near my home and was then very much interested in superior seedling nut trees. It was at that time, in a talk with him, that I became interested in the propagation of nut trees. At this time he took me with him to locate the "Warrick" tree which stands on Pigeon Creek in Warrick County, Indiana. The next day he, R. L. McCoy and myself went to the Greenriver grove where the Major and Greenriver trees were located. These are now being propagated and are considered outstanding varieties. Also a trip was made to Posey County, Indiana, where the Hoosier tree was located. This variety was soon dropped. From that time on R. L. McCoy and myself kept up a constant search until he left Indiana in 1918. Since then I have done a lot of work along this line myself.