GENEKAL NOTES 
189 
grasp a person’s hand. On the evening of capture, warm diluted “Carnation” 
milk was offered in a glass medicine dropper. Little was taken then, but the 
next day they fed five times, and at one feeding each took about 10 cubic centi- 
meters of the milk. The following day they were fed four times at intervals of 
approximately four hours, taking about the same amount at each feeding. Simi- 
lar feeding was carried on for two days more but by the fifth day they showed 
little desire to feed, and their weakened condition caused abandonment of further 
attempts to keep them alive. Often a finger wet with milk would be seized and 
sucked on eagerly until all the milk had been drawn in. The tongue was held in 
a broad U-shape when sucking. 
When feeding, the young pushed outwardly with their fore feet, and they 
suckled the medicine dropper contentedly only when their feet found a surface 
against which they could press. Presumably when feeding normally they mas- 
sage the mammary glands of the female as do the young of domesticated animals. 
They squirmed a good deal while feeding but more than once upon having their 
hunger satisfied they fell asleep before being put away. Between feedings the 
young spent practically all of their time asleep. When first taken they twitched 
and twisted while asleep but this was less evident as they grew larger. When 
asleep they curled up with the nose toward the lower part of the abdomen and 
often with one hind leg thrown over the head. The young uttered low squealing 
sounds when taken from the nest and later, in captivity, especially if they 
became cold. 
When first seen the skin of the young squirrels was loose and wrinkled. Three 
days afterward their bodies had filled out so that this condition had entirely 
disappeared. The hair, which at first was but a slight growth on the dorsal 
surface, had in the same period of time grown rapidly, and the white lateral 
fringing of the tail began to show. A brown spot appeared at the inner base of 
each ear and the black ended overhairs on the dorsum showed conspicuously. 
But there was only a very slight growth of hair on the belly during this time. 
The whole appearance of the young was substantially changed during this inter- 
val. When found, the disproportionate size of the head and feet suggested the 
young of a carnivorous mammal. This changed to a typical squirrel appearance 
within three days. 
At no time were the eyes open, although to judge from their growth in cap- 
tivity the squirrels must have been more than a week old when found. Forty- 
eight hours after being collected the male weighed 74.6 grams and measured 
(approximately) 205 X 93 X 34 X 8 millimeters. Three days later he measured 
220 X 100 X 35 X 8. The female weighed and measured at the same time, was 
80.4 grams and measured 225 X 95 X 37 X 8. Similarly, when prepared as a 
specimen, she measured 240 X 102 X 40 X — . Weights were not taken subse- 
quently as the animals were much reduced by their enteritis and weights then 
would not have been significant. — Tracy I. Storer, Museum of Vertebrate Zoology, 
University of California, Berkeley, Calif. 
