220 W. Gibbs on the action of the 
Sodic stryphnate Na(€,H,N,8,)+H, 6, closely resembles 
the potassic salt, and may be obtained directly by the action 
of sodic nitrite upon uric acid, It is, however, more difficult 
ft : 
which when large, have a bright yellow color, It is rather 
easily soluble in hot water and separates slowly, but almost 
completely, from the solution on cooling. 
0°5235 gr. burnt with plumbic chromate, gave 0°4680 gr. €6, = 
24°79 per cent carbon. 
0°4352 gr. gave 00910 gr. H,O= 2°32 per cent hydrogen. 
0°2910 gr. gave 125°86 ¢.c. nitrogen at 18° C. and 559™™" = 36°28 
per cent nitrogen. 
Calculated. Found. 
Carbon 24°86 24°79 
Hydrogen 2°07 2°32 
Nitrogen 36°26 36°28 
In the analyses the carbon and hydrogen were determined 
separately as, in consequence of the large quantity of oxyds of 
nitrogen formed, it was found necessary to add metallic mercury 
to the chromate employed for combustion. 
Baric stryphnate is precipitated after a short time in pale 
yellow needles when a solution of -potassic stryphnate is added 
to one of baric chlorid. The salt may be washed with col 
water and purified by repeated recrystallization, It dissolves 
readily in hot water and separates from the solution almost 
completely as it cools. 
0°9475 gr. of the salt dried at 102° C. gave 0°1386 gr. of water 
and 0°7093 gr. carbonic acid = 20°41 per cent carbon and 
1°62 per cent hydrogen. . 
0°4858 gr. gave 0°2384 gr. baric sulphate = 28°74 per cent barium. 
Found. 
Carbon 8 20°12 20°41 
‘Hydrogen 8 167 1°62 
Barium 1 28°72 28°74 
The formula of the salt is therefore Ba(€,H,N,©,), +2H,9 
Strontic hnate is formed in precisely the same manuet, 
and cannot be distinguished in appearance from the baric salt. 
cooling. 
0°7526 gr. gave 0°1544 gr. §.@ —20°51 per cent. The formula 
Sr(€, HN 62). + 6H, 6 requires 2072 per cent SrO. : 
Calcic stryphnate closely resembles the baric and stronti¢ 
salts. The salt analyzed was prepared by precipitating calcic 
