32 J. M. Ordway on Mintae pina. 
This was subjected to three purifying Scoetinnial precipitations,— 
19,—and two subsequent integral precipitations, and finally yielded te 
parts of a very hard product “which afforded a cle — with 
times its weight of cold water,—all being taken up except a thin ote 
salt formed, the silicate gradually undergoes a change of state and finally 
gelatinizes. Nitric acid is peculiarly suitable for withdrawing the alkali, 
because the nitrates have less modifying power than most other salts. 
7:4 Silicate of Soda,—with Alcohol of sp. gr. 0°842. 
—100 pts. of a solution pees 9°3 p. c. of Naioo Siizs,—with 10 
ay MS tr este oe s 55 Ps f a flocculent soluble precipitate contain- 
ing 45 p. ¢. 
6.—99 parts of the supernatant liquor of rw 10 of alcohol »—gave 
8 pts. of a hard precipitate containing 50°5 p. ¢, of Naim 
¢.—100 pts. of the supernatant liquor of 5,_with Is of fea! —gave 
2°24 pts. of asoft precipitate containing 50 p. c. of Nai Sirs 
d, ear, pts. of the supernatant liquor of ¢,—with "20 of aleobol —gave 
‘67 pts. of a very soft precipitate igo es 57 p. c. of Naioo Sisco. 
eae” pts. of the supernatant liquor of d,—with ef , of alcohol,—gave 
0°76 pts. of a liquid precipitate containing 52 p.c. of Nao Sissi 
The remaining alcoholic liquor contained 0°5 pts. of Nano Sis. 
Bisilicate of Soda,—with Alcohol of sp. gr. 0°824. 
22,a.—100 pts. of a solution containing 10 p.c. of Najoo Sir,—with 7 
of aleohol,—gave 0 ‘5 pts. of a hard precipitate insoluble { in water. 
108 pts. of the Selece | liquor of a,—with 10 of alcohol —gave 
24.—100 00 pts. of a solution made fried 23 b, and “taiitng 10 p.c of 
Saco Siasy—vith 20 of aleohol,—gave 16-5 bie of a soluble precipitate 
onte 44 p. ¢. of Naioo Sizes. 
anette ernie > 
ame 
