_ signs of life became more and more marked ; and in 
HIBERNATION OF THE JUMPING MOUSE. 
BY PROF. SANBORN TENNEY. 
On the 18th of January of the present year (1872), I went 
with Dr. A. Patton of Vincennes, Indiana, to visit a mound situa- 
ted about a mile or a mile and a half in an easterly direction from 
Vincennes. While digging in the mound in search of relics that 
might throw light upon its origin and history, we came to a nest 
about two feet below the surface of the ground, carefully made of 
bits of grass, and in this nest was a Jumping Mouse (Jaculus Hud- 
sonius Baird) apparently dead. It was coiled up as tightly as it 
could be, the nose being placed upon the belly, and the long tail 
coiled around the ball-like form which the animal had assumed. 
took the little mouse into my hand. It exhibited no motion or sign 
of life. Its eyes and mouth were 
shut tight, and its little fore feet 
or hands were shut and placed 
close together. Everything indica- 
ted that the mouse was perfectly 
dead, excepting the fact that it 
L) f was not as rigid as perhaps a gr 
ai ohi iouis EA Baird.) e would be in the jii 
tied the mouse and nest ™ my 
handkerchief and caried them to Vincennes. Arriving at 
Patton’s office I untied my treasures, and took out the mouse a 
held it for some time in my hand; it still exhibited no sig? ° 
of the hind legs. Presently there was a very sli 
of the head, yet so feeble that one could hardly be 
pressure of my fingers upon the tail near the body was fol 
by an immediate but feeble movement of one : 
At length there was unmistakable evidence that the animal y 
breathing, but the breathing was a labored action, and sè 
performed with great difficulty. As the mouse became warmer fh 
the on 
the same afternoon on which I brought it into the warm roo? 
(830) 
