into the concealment of the acacia. R then mounted to the roof, but A "stayed put". I left to make this entry. At the moment it looks as if A, unless caught unaware, will be able to resist panic. (That is, if pressure upon him is not too persistent). As noted, Archie's facial expression is "harder" than when he left, wilder and more watchful. There are intervals when it softens. Users of steam boilers have an empirical classification of waters based upon "permanent" and "temporary" hardness. Archie's expression seems to lend itself to ANALYSIS: similar analysis. There is a hardness which peaceful surroundings may banish: "temporary hardness"; and a hardness which appears to be permanent due to the increased width of the brassy ring surrounding his pupils, perhaps. One of Rhody's visits to the cage this morning it was observed that he retrieved some of the nesting material which he had dropped at the mirror yesterday and carried it to 5-36. A model of optimism. Rhody's interest in other birds has frequently been commented upon in these notes, and most of it ascribed to curiosity. Yesterday it was extended to ground-squirrels. While at the cage he saw two squirrels ten yards away and promptly ran to them, stopping a yard from them. When one ran away he watched it until it disappeared. The other he watched, with an occasional flirt of the wings, until it also left, though unhurriedly. R then returned to the cage. Archie's attitude toward the magpies may be said to be no attitude at all, for he ignores them entirely, even when they approach within six inches of him (with the wire between) and make comments. (They are, I think, not attracted by him, but my presence there with him and the consequent possibility of food). 12:05 P.M. Archie has just had his second mouse of the day. Again the difference in strength (and skill?) between him and Rhody was marked. It was not a large mouse. Rhody, unless he wanted such a mouse for his ritualistic rites, would have given it a squeeze or two without any necessity for hammering it on the ground and the mouse would have been dead. Archie whirled this one over his head and beat it upon the ground fully twenty times, squeezed it, etc. and it was still squirming when he swallowed it. Perhaps he will get more pep under this system of diet. Rhody, yesterday, was again observed in what appeared to be a prolonged effort to eject a pellet. The action was accompanied by vigorous throat-scratching. No visible results. Rhody sometimes turns around to look at his stool. As the act of defecating is sometimes accompanied by a popping sound, maybe it is this that attracts his attention. On the other hand, it may be that he is checking up on the functioning of his digestive apparatus! About 1 A.M. Archie was reposing on a board at the entrance to the cage, whining as I appeared. I entered. He soon returned to the same spot to continue his siesta. When I left at 3:30 he had dozed there continuously until 3:45. He then gave me an opportunity (after bringing me a "present") to try for color films of the metallic colors of his tail, returning to the board to