154 Scientific news. 



been given to this metal by any chemicalprocefs. It appears 

 only that the iron in this oxide is carried to a degree of 

 oxygenation nearly approaching to the maximum. 



Bulletin de Sc. No. 55, An. 10. 



Ufc of Whijkers in certain. Quadrupeds. By M. Vrolyk, 

 Profeffor of Natural Wftory at Ainfterdam. 



The whifkers of This naturallft has endeavoured to afcertain, by experi- 

 animals appear mcnt f what ufe the long ft iff hairs, termed zvfujlcers, which 



to be uferul to , . ■ 



/eel their way in are placed near the mouth of certain quadrupeds, might be to 

 irregular cavi- them. Having difpofed a number of books, placed on their 

 edges, upon the ground in his chamber, fo as to form a kind 

 of labyrinth, he let loofe a rabbit, with his eyes bound up, 

 amongft them. The animal fucceeded in extricating himfelf 

 from this labyrinth, without having overturned them ; but 

 when Mr. Vrolyk had cut off his whifkers, the animal, having 

 no longer thefe tentacula to dire.cl.him, ran againft the books, 

 and overturned them. Moreover it is known that the bulb, 

 in which each of the whifkers is implanted, receives a fmaU 

 nervous filamen proceeding from the infra-orbilaty nerve. 



Soc. Philoin. No. 50, X, 



Galvanic Charge, of a large Battery by the Metallic Pile. By 

 Dr. Van Marum. 



The Harlem Dr. Van Marum, of Harlem, has charged 25 large electrie 



\ mt 2 v ^m Cd J ars ( contaimn S 137 2 Square feet of coating) by an almoft in- 

 stantaneous contact of a galvanic pile of 200 pair of 3 Guilder 

 filver pieces, alternated with zinc and moift, cloth. The 

 electric intenfity was equal to that of the pile itfelf, but the 

 lhock much lefs. The fhock of the battery was generally 

 equal to that of half the number of pairs employed in its 

 charge. It was, however, very ftrong, and reached up to 

 the flioulders. As the 120th Number of the Annates de 

 Ciiemie, in which his letter is inferted, arrived late in the 

 month, I mufi defer the reft of the account. 



ACCOUNT 



