An extra- ordinarily long period of immobili- ity by Rhody. north and north west and down into the sheltered valley below. Here he sat on the same limb of the same tree without shifting his position until 3:05 P.M., at which time he began his leisurely stroll toward house No.1. This one mouse was undoubtedly all the food he had during the day. He seemed perfectly content to while away this long period (of about four and three quarters hours) doing absolutely nothing but watching events down in the valley (Children, dogs, motor cars). On the 31st. Mr. O'Neill brought Mr. Duff and young daughter to see Rhody. We found him in his house No.1 at 9 A.M. and stood at the tree. He was not frightened and obligingly came out of the house after we had been there several minutes and sat quietly in two or three different places in plain sight in the tree (about 10 feet from us) and looked at everything else in the world but us. When he left he stayed there for a time, then took up his old look-out place on the west lot, remaining there for hours. About 2:30 he came up for meat and mouse and went up to No.2 at 2:50 P.M. He was still there as darkness fell. 9:30 P.M. (Raining slightly). He is still in No.2. Now why does he change from one house to the other? November 1st Good rains during last night, clearing up about 9 this morning, at which time Rhody was still in his house No.2 in the eucalyptus tree. A few thrasher calls sounded from the east. Rhody moved to a limb close to his house to sun himself and was there at 10 o'clock. At 10:30 he was playing with the magpies, but was glad to see me appearing upon the scene and dropped down from the roof of the cage promptly to follow me to the tool-house, where I gave him a huge mouse, as from his behavior, I judged that he would not quibble about its being too big. And so it proved. The rest of the day alternated sun and shadow, mostly the former, Rhody staying at home to lie in sunny spots on the ground. (Temperatures in the low sixties). At 2:50 he had had enough "activity" for the day and proceeded toward his house No.2, which he entered at 3:09. While he was climbing up to it Neo was digging silently (and alone) near the base of the tree and came to me for tossed worms. He refuses to become as tame as Brownie and is still timid. Rhody, in house No.2, suc- cessfully resists temptation to flee from noise. About 4:20 the screeching gang of children renewed their football activities in the street by Rhody's tree and kept it up until darkness fell. Two yelping dogs were with the children (6) and most of the clamor was within 25 feet of the base of R's tree. He was tempted to decamp, but managed to restrain himself this time and, at 8:30 P.M. (horned owls hooting in the garden) was still at home. (Calm, brilliant "5/8" moon sailing in and out of patches of white clouds; 54°). Now this occasion was just as noisy and as hazardous as the other one on which Rhody fled in fear; yet this time he stuck. Has he learned so quickly that, although it is trying to the nerves of road-runners, there is no real danger? Also why, the last two days, has he decided in favor of No.2 again? November 2nd Rhody was still in No.2 at 9 A.M., but went to the west lot shortly thereafter. Julio gave him a mouse there and he did not