ZAI'LS HUDSONIUS. 201 



a supply of air. l^tuhn' this i^lass was placed a good supply of 

 waste cotton. Soon after it was fairly established in its new and 

 more commodious quarters, it bet4"an to clean ev^ery part of its body 

 in the most thorouij;-h manner, washing itself very much in the 

 same manner as a cat washes. On coming to the tail it passed 

 that long member, for its whole length, through the mouth from 

 side to side, beginning near the body and ending at the tip. At 

 night as soon as the lights were put out the mouse began gnawing 

 the paper, and during the night it gnawed all the newspaper it 

 could reach, and made the fragments and the cotton into a large 

 nest perhaps five or six inches in diameter, and established itself 

 in the centre. Here it spent the succeeding day. The next night 

 it was supplied with more paper, and it gnawed all it could reach, 

 and thus spent a large part of the night in work. I could hear the 

 work going on when I was aw-ake. In the morning it appeared to 

 be reposing on the top of its nest ; but after watching it for some 

 time, and seeing no motion, I lifted up the glass and took the 

 mouse in my hand. It showed no signs of life. I now felt that 

 perhaps my pet was indeed really dead ; but remembering what I 

 had previously seen, I resolved to try to restore it again to activity. 

 By holding it in my hand and thus warming it, the mouse soon 

 began to show^ signs of life, and although it was nearly the whole 

 day In coming back to activity, at last it w'as as lively as ever, and 

 afterward, on being set free in the room, It moved about so swiftly 

 by means of Its long leaps, that it required two of us a long time 

 to capture it uninjured. 



" On the evening of February 6th I reached my home in 

 Wllllamstown, and on my arrival the mouse was In good condition. 

 But the next morning it was again apparently dead ; in the course 

 of the day, however, being placed where it was warm, It gradually 

 came back to activity as before." 



The statements of Godman and Thompson, that the Jumping 

 Mouse remains torpid till the last of May or first of June, are 

 H 



