J. M. Ordway on Waterglass. 179 
11, 8. A saturated — of stannate was put with as much melted 
Na Si H, as would make Na, Sn Si, and the mixture was evaporated at a 
gentle heat till it cdased 405 . c. of solid matter. It cite clear 
veral 
of the coldest days of winter. The strong liquor bore boiling without 
apparent change, but when much diluted was coagulated by heat. 
Stannate of Potash with Silicate of Potash. 
2); 12. A mixture ao so as to contain 21 p.c. of K, Sn Si, underwent 
' no viable change in am 
Fr: f A mixture Smicins 19 p. ce. of K, SnSi, also remained unchanged 
or a month. 
ee 
x 
i ~, 
Bem ae =. 8S eS — PNA 
2 T as no elite siraien for a day, but in three days 
it became a thin transparent jelly. After standing a week it was squeezed 
gradually and then hard pressed. The ee oy product raighed 28 
g. and contained 39 p. c. net of K, Sn, 
13, 8 ¢. of a 2°5 p.c, KSn solution i Werbanized ‘with’ 240 g. of 8 
‘p-¢. KSis, It remained puteren: unchanged for a week. In se course 
me second week it me gelatinous, but no a cou a 
uv Pp. €. “of mother liquor and 40 of Barts ; 
ee 77 Eee of a solati ion peor ae 15 p.c. of K 8a, were mixed with 
38 g. of a 20 p. c. solution of K Sig, so as to make in all K, Sn, ae It 
‘underwent no noticeable modification for some time, but in two days it 
formed a — slightly opaline jelly. After standing a week, it was hard 
Pressed and a a mass weighing 28 g. and containing 38 p. c. net 
orale 
/ 
Metastannate of Potash with Potash Waterglass. 
15. 20 g. of a10 p.c. K Si, liquor sg mixed with 20 g. of a solu- 
tion pe rmning 10 p. ec. KSny.4. There no change for some time, 
but ne oa of 17 days it dnickonad: The hard ‘pressed solid part 
neigh 5 g. 
@. 10, of a 30 p.c. solution of KSis were stirred into 10 g. of a 
» C. Picedtation of K Sn sa. It soongot a little thicker but did not gel- 
ata 
eaker solutions of the same metastannate and silicate, were mixed 
: similar res ults. 
- 10g. of a 10 p, c. KSig solution were put with 10g. of a 10 Be 
the course of 10 days it gelatine 
= oop of all the ex eriments from which this - 
been » brings to ein nothing definite or 
