(285) radiation of shorter wave length in direct sun light. I suppose all of this is covered in the literature someplace and is a matter of common knowledge with the entomologists. On one or two occasions I had noted that when I had left the cover of my worm box open and the box in the sun for but a few min- utes while feeding the birds, the worms were either killed or at least temporarily deprived of the power of movement. Yesterday I made a very rough experiment by putting one of the worms on the ground in the sun. The ground was not uncomfortably warm to the hand. The worm began to jerk about violently in a few seconds. In one minute it had turned over on its back, straightened out and was not moving its body. In 2 minutes only its feet were moving feebly and in 2 min. 20 sec. I picked it up and put it in the shade. It did not squirm when I picked it up as these larvae usually do. The reason it was removed from the sun at this time was that I could no longer see its feet move. I prodded it occasionally and, after a time, it moved its feet slightly. After 5 or 10 minutes it seemed about the same and I gave it to one of the birds, since this was only a rough, qualitative experiment not made under controlled conditions. At the same time it showed that the sun's rays have a powerful effect on this particular organism. The shade temperature 100 feet away, in what was perhaps a cooler spot, was 80° F. at the time. July 21st The only thrashers seen today were the two adults and No.4. Greenie was out of sight somewhere nearly all of the time and when he did appear, carried no food, but was willing to come to me to get some. On one occasion he carried it to where I suppose No.4 was at the time. Brownie was about all of the time when I looked for her and, at times came, and looked me up. No.4 accompanied her frequently on her short digging trips, 50 to 100 feet from the glade, but did not beg insistently for food. He can jump and fly to a height