securing the young. Two juveniles were found in a special nest chamber
(see p. 30). These were estimated to be perhaps two weeks old. A serious
effort was made to raise the little animals by feeding milk with a
pipette and keeping them warm with a hot water bottle, but they survived
only 10 days, without the eyes having opened. The uneven temperature as
well as the character of the food was probably responsible for their
deaths. On February 3 they were measured and weighed, with the following
results:

---------------------------------------------------
| | Measurements (in millimetres).
| Weight |-------------------------------
| (in | Total | Tail | Hind
| grams). | length. | vertebrae. | foot.
---------|---------|---------|------------|--------
No. 1 | 13.3 | 90 | 38 | 24
No. 2 | 12.6 | 93 | 38 | 24
---------------------------------------------------

At this stage the young were partially clothed with a coat of fine
velvety fur, more especially on the bodies, the tails being still nearly
naked. The body color was dark plumbeous, just the color of the dark
underfur of the adult, or a shade darker, while the characteristic white
markings of the adult stood out sharply as pinkish-white areas against
the dark background (see Pl. IX, Fig. 2, at p. 32). The proportions were
much as in the adult, except that the tails were relatively much shorter
and the feet relatively longer.

Only one other record of young is at hand, that by Bailey, who secured
the young after capture of a suckling female at Santa Rosa, N. Mex. In