sections and rejections as if having formed some judgment as to the immediate requirement of the structure at the stage of con- struction reached. (10:05 P.M. At this point I received a tel- ephone call which necessitated my going out to Berkeley to take charge of an orphan humming bird. Before completing this task I was asked for help in connection with the illegal trapping of 5 Bullock orioles. I have been busy on this ever since). May 11th. At 6:30 A.M. the orphan hummingbird, an Anna's, probably just out of the nest yesterday, opened his bill when the cover was re- moved from the cage and kept it open until he was given a squirt, with the medicine dropper, of the same kind of food on which the other humming-birds were fed earlier this year. The juices of a meal-worm were now added to this mixture and a small bottle of the combination placed in his cage. When the bottle was held up to him he first nibbled at the edge of the neck, then licked the out- side and then finally discovered the proper method to get at its contents. From that time on he recognized the bottle as a contain- er of food and it is no longer necessary to feed him by hand. This bird appears to be absolutely devoid of fear of man, but he watches everything curiously. He can fly well; but hovering flight is beyond his present capabilities: consequently his food has to be placed near a perch. He is all gray except for a slight green wash on his back. He sits quietly in one place, does not fly about in the cage, occasionally preens, stretches and buzzes his wings. Before he was able to feed himself he called for food with a little chirping note of extremely high pitch. Now that he knows the ropes he does not do it. Mr. Brock and I, after interviewing the U.S. Biological Survey local officials last night, took the orioles out to the place where they were captured and released them. I had previously lo- cated oriole nests under construction at that place (3 or 4 days ago) and suspected that the captured birds were the builders. This view seems to be borne out by the fact that, before release, we could hear and see no birds at or near these nests. We contacted the local officials of the San Francisco City department under whose jurisdiction these lands fall, also one of the State ward- ens and were promised cooperation by them with the Biological Survey and with ourselves in an endeavor to prevent illegal trap- ping of birds in the future. On returning at noon Rhody was found in the cage. He wanted no food and seemed inclined to a long period of leisure. 1 P.M. He is still loafing. For some time he has been neglect- ing the meat in the cage, preferring mice and the results of his own hunting expeditions; but during the last few days he has rather leaned toward meat instead of mice. 2:45 P.M. Rhody, during his loafing period, has been using the spread-eagle sunning pose frequently, and the open-bowl type not at all. This means air temperatures in the court --not necessar- ily at the point where he is-- which may be higher--not lower than 65 or 70 as a rule. To check this I just looked at the thermomet- er in the court: 74 deg. I have just given him a mouse at the tool-house. He was first interested in looking into his meat dish in the cage, which was empty. When he discovered that fact he immediately came toward me and followed to the tool-house, though he just refused to do so a few minutes before. It would seem