354 



Chemical Apparatus. 



It has been found by Mr. Oakes, 



vicinity of Westfield, Mass. 

 at Ipswich, Mass. 1827. 



C. aquatilis, Wahl. Vol. X. p. 267. 

 Found by Mr. Oakes, in 1827, in a marsh near the base of 

 the White Mountains, N. H. 



Art. XIV. — Some new modifications of apparatus, calcula- 

 ted to facilitate the experimental illustration of the science; 

 by Robert Hare, M. D. Professor of Chemistry in the 

 University of Pennsylvania. 



Combustion of pulverized metals in chlorine. 



A jar, about thirty inch- 

 es in height, is placed be- 

 tween two iron rods, which, 

 towards their upper ter- 

 minations, have been cut 

 by a screw-plate, and duly 

 furnished with screw nuts. 

 By these means, a lid is 

 pressed upon the mouth of 

 the jar, so as to be air tight. 

 Into the centre of the lid, 

 a cock is fastened, the key 

 of which, instead of being- 

 perforated as usual, is dril- 

 led only half through, so 

 as to produce an excava- 

 tion capable of holding a 

 thimbleful of powder. 



There is inserted into 

 the lid, on one side, a re- 

 curved tube, to which a 

 large uninflated bladder is 

 tied, so that the cavity of 

 the bladder, may freely 

 communicate with that of 

 the jar. On the other side, 

 the beak of a retort is in- 

 troduced, so as to reach 

 the bottom of the jar. 

 The body of the retort, being properly supplied with mu- 

 riatic acid and manganese, and heat being applied, chlo- 



