ZAPus iiuDsoxirs. 293 



this animal ])rings forth its younor. But it has been seen leaping- 

 al)out with the young- ones strongly attached to its teats. lu)ur 

 young ones have been seen thus attached." 



Dr. ncKa\- savs that Mr. Jesse Booth, of Orange County, New 

 York, writes him : "In cross-jjlowing some years since, my atten- 

 tion was taken up by seeing some small thing move off from near 

 my plough, at about the moderate walk of a man. It went over 

 ridees and descended the hollows of the furrows, bearing- some re- 

 semblance to an old withered oak leaf. I pursued it, when it 

 proved to be one of \\\(1'^q. ivood-i)iicc\ or juDipiuo- mice ; a female, 

 with four young ones attached by their mouths to its teats."* 



TJic Hibernation of tJic Jmnpiiig Mouse. 



Dr. Benjamin Smith Barton, of Philadelphia, was the? llrst to 

 niake known the fact that the Jumping Mouse hibernates. On 

 the 2d of October, 1795, he read a paper before the American 

 Philosophical Society (which was not published, however, till 1799) 

 in which he states : "In the n^ionth of I'ebruar)-, one of these 

 animals was found, seemingly in a torpid-state, under a stone, in 

 opening a quarry." He further sa\s, that a farmer, living near 

 Philadelphia, has often discovered them, " at the depth of eighteen 

 inches or two feet under oround, when he has been diotrino' for the? 

 roots of horse-radish and parsle)', in the winter-time." t In a 

 supplement to this article, published in i(So4, tlie same author 

 observes : — 



" In the month of August, 1796, one of these little animals was 

 brought to me from the vicinit)- of this city. It was [)ut into a 

 large glass jar, where I was so fortunate as to preserve it for near 

 four months. Though it made many efforts to escape from its 



* Zoology of New Voik, I'.-irt T, 1842, p. 72. 



f Some account of an American Species of Dipus, or Jerboa. By Benjamin Smith Barton, M. D. 

 Transactions of tlie American Philosophical Society, Vol. IV, No. XII, 1799, p. 122. Barton 

 again refers to the hibernation of this species in his Fragments of the Natural History of I'cnnsyl- 

 vanin, 1799, pp- xii, >^iii- 



