Intelligence and Miscellanies. 395 
Chloride of lime in psora. nies Derheims proposes 
de following sees as a cure - ite 
of lim "3 ounces. 
Distilled wate: : - 1 pint. 
Dissolve and filter, and use it asa lotion on the thighs, 
legs and arms, two or three times a day. From six to ten 
days treatment will be sufficient.—Jdem. 
53. Tron furnaces in England and Scotland.—The num- 
ber of high furnaces in 1740 was but fifty nine. This num- 
ber has been increased as follows, 
74 urnaces producing 17.000 tons. 
1788, ~ 7 68.0 
£796, 121: * = 125.000 “ 
1806, “ “ 250.000 * 
1820, “ “ 400,000 “ 
1827, 284 oa 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, by M. Le 
Roger.—Exhaust_ the me matter from the gall nut by 
repeated decoctions: ad e concentrated decoctions 
a solution of — which papas the tannin; filter ; 
add very pure animal carbon—boil during eight or ten min- 
utes; filter aga as 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 protochlonde of 
mercury are triturated together with water, decomposition 
_ and there are ase: a and ioduret of 
cury.—Jour. de Pharm 
56. ee on a new method of preparing the deutoxide of 
barium, by M. Quesneville, fils. F perng obtained, in a sim- 
ple manner, ‘the deutoxide of barium, a think it right to 
_ make known the process, because being less expensive than 
that which is followed, it will enable chemists to procure at 
