Intelligence and Miscellanies. 395 



52. Chloride of lime in psora. — M. Derheims proposes 

 the following solution as a cure for itch. 



Chloride of lime, - - Bounces. 



Distilled water, - - - 1 pint. 

 Dissolve and filter, and use it as a lotion on the thighs, 

 legs and arms, two or three times a day. From six to ten 

 days treatment will be sufficient. — Idem. 



53. Iron furnaces in Eng-land and Scotland. — The num- 

 ber of high furnaces in 1740 was but fifty nine. This num- 

 ber has been increased as follows, 



1740, 59 furnaces producing 17.000 tons. 



" 68.000 " 



" 125.000 " 



" 250.000 " 



" 400.000 " 



" 690.000 " 



Of the two hundred eighty four furnaces last mentioned, 

 ninety five are in Staffordshire, and ninety in South Wales. 



54. New process for obtaining gallic acid, hy M. Le 

 Roger. — Exhaust the soluble matter from the gall nut by 

 repeated decoctions : add to these concentrated decoctions 

 a solution of gelatine, which precipitates the tannin ; filter ; 

 add very pure animal carbon — boil during eight or ten min- 

 utes ; filter again, and then by evaporation and cooling, 

 crystals of gallic acid will be obtained, of a silky texture, 

 and perfectly white. Gall nuts of the first quality furnish 

 by this method, the fourth of their weight of acid ; whereas, 

 by the process of Braconnot, they yield only a fifth. — Mem. 

 de Phys. de Geneva. 23, p. 79. 



55. Action of iodine on protochloride of mercury, by 

 Planche and Soubeiran. — When iodine and protochloride of 

 mercury are triturated together with water, decomposition 

 ensues, and there are formed deutochloride and ioduret of 

 mercury. — Jour, de Pharm. 1826. 



56. Note on a new method of preparing the deutoxide of 

 barium, by M. Q,uesneville, fils. — Having obtained, in a sim- 

 ple manner, the deutoxide of barium, I think it right to 

 make known the process, because being less expensive than 

 that which is followed, it will enable chemists to procure at 



