jumping Moufe of Canada. 28 1 



be found no perfect analogy between them. The uranium 

 does not become acid j it cannot be combined with cauftic 

 alkalies, and does not redden vegetable blue colours. Tita- 

 nium diffolves in acids, produces cryftallifable falts, and does 

 not combine with alkalies. Tungften becomes yellow in 

 acids, without being diflblved ; and gives, with alkalies, white 

 cryftallifable falts. It would be ufelefs to continue the com- 

 parifon of this fubftance with other metals ; their properties 

 are too well known ; and it is evident that they exhibit no 

 phenomena of the like kind. 



[M. Vauquelin's fecond memoir on the properties of this 

 new metal will be given in the next number of the Philofo- 

 phical Magazine/] 



JK. An Account of the Jumping Moufe of Canada, Dipus 

 Canadenfis. By Major General THOMAS DAVIES, F. R. S. 

 and L. S. From the Tranfactions of the Linnean Society, 

 Vol. IV. 1798. 



A* 



uS I conceive there are few perfons, however converfant 

 with natural hiftory, who may have feen or known there 

 was an animal exifting in the coldeft parts of Canada, of the 

 fame genus with the Jerboa, hitherto confined to the warmer 

 climates of Europe and Africa ; 1 take the liberty of laying 

 before this fociety the following obfervations (accompanied 

 by a drawing) on an animal of that kind, procured by myfelf 

 in the neighbourhood of Quebec, during my laft refidence in 

 that country. As I do not recollect to have feen this animal 

 either figured or defcribed by any author in natural hiftory, 

 I flatter myfelf, thefe obfervations may afford fome fatisfac- 

 tion to the president and members of the Linnean Society. 

 The fpecimens from which I made" the drawing are now in 

 my collection. With refpedr. to the food, or mode of feed- 

 ing, of this animal, I have it not in my power to fpeak with 

 amy degree of certainty, as I could by no means procure any 



kind 



