certainly do so when the shower that was seen approaching finally arrived. A sharp flurry of hail left him unmoved, so, being unprotected myself, I left him to his own devices. Humming-bird food Mr. Eric Kinsey, who keeps humming-birds in captivity at his place in Manor, on inquiry last night at the Cooper Club, said that he uses : 1 teaspoonful honey, 1 " condensed milk, 1 " Mellin's food, 1/3 cup of hot water. Further he says it is absolutely essential for their well-be- ing to give them "Vinegar flies" (Drosophila sp?). These he al- lows to fly about in their cage, which is of glass. Inquiry at the M.V.Z. this afternoon elicited the information that the Genetics Dept. at Hilgard reared these insects in quantity Application there resulted in Mr. Ernest Jund's giving me cultures of Drosophila molangaster. One, the wild form found around wine cats and the other a variant thereof with vestigial wings and in- capable of flight. The problem now becomes: How to feed them to the hummers. (They call the one with vestigial wings "Vg"). Mr. Kinsey's mixture is much more dilute than the one I was using. About 4:30 P.M. the hummers' vials were cleaned out and refill- ed with food according to the Kinsey formula. It is anticipated that they will eat more of this and drink less water. This was a day of bright sunshine alternating with rain and hail. Temperatures of the order of 40 min. and 52 max. January 30th. Up to noon time, a day like yesterday with everything steam- ing during the sunny periods. A half hour search for Rhody, beginning about 11 A.M., ended by finding him at the cage looking at R5, who stood but a few feet from him. Neither bird was showing any excitement. Rhody at once lost interest in R5 and came to me for a mouse, then went to the sage patch to sun himself. I went there to watch his behavior and Brownie, who had been rather persistent during the morning in looking me up for worms, soon appeared. Wrentits were scolding Rhody and the two kinds of towhees were watching him. He and B were often as close together as 4 or 5 feet, but showed little concern about the others presence When I left I spoke to R and he cried, then followed me to the tool house for a second mouse. This time he did not go to the shop-yard first, but came to the tool-house door directly. At 1:30 Rhody was again found at the cage, standing in front of the mirror watching R5 who was on the floor of the cage picking up and dropping various objects. I went inside to watch. It ap- pears that R5's interest in R is sufficient to make him even less concerned by my presence in the cage than usual. Both birds were rhythmically raising and lowering crest and tail; both silent. Except for the presence of the wire excluding Rhody, we formed a fairly compact group and it was easy to observe the slightest