On definite Proportions. 181 
potassium and 17°135 of oxygen; so that these experi- 
ments agree tolerably well with each other. 
Sopa. Mauriate of Soda. 
Five grammes of ignited muriate of soda afforded 19°93 
of fused muriate of the protoxide of silver, which contain 
2°32798 gr. of muriatic acid. The muriate of soda con- 
sists therefore of ‘ 
Muriatic acid... 46°5596  100°000 
Soda ......... 53°4404 14°78 
Sulphate of Soda. 
Five grammes of ignited sulphate of soda afforded 8*2 of 
sulphate of baryta, corresponding to 2°813748 gr. of sul- 
Phuric acid. Consequently sulphate of soda consists of 
Sulphuric acid  56°275 100°000 
Soda......0. 43°795 77°699 
Soda. 
Ihave found that -439 gr. of sodium afford 1:118 of 
muriate of soda, containing -59746 of pure soda: hence 
100 parts of soda consist of 73°5 of spd, and 96°5 of 
oxygen. But if 114°778 parts of soda contain 29°454 of 
oxygen, soda must consist of 
Sodium 74°3383 100°00 
Oxygen 25-6617 34°52 
If we calculate from the sulphate, 77°699 parts of soda 
must contain 19°95 of oxygen, and soda must consist of 
74°35 of sodium and 25°676 oxygen: and since these re- 
sults agree so completely with each other, it is not impTo- 
bable that there was an error in the direct experiment. 
Lime. Muriate of Lime. 
I obtained from 3°01 gr. of ignited muriate of lime 7°73 
of fused muriaie of the protoxide of silver. Consequently 
the muriate of lime consists of 
Muriatic acid 48-893 100-0 
Lime ...... 53117 104°6 
Hence lime must consist of 
Calcium .... 71°84 100'0 
Oxygen..... 28°16 39°2 
Ammonia. Muriate of Ammonia. 
I thought it necessary to repeat ance more my formeg 
analysis of this substance, and I obtained from 10 grammes 
of well dried muriate of ammonia 26°72 of fused muriate 
of the protoxide of silver, answering to 50°86 parts of mu- 
riatic acid for 100 of sal ammoniac. If these were united 
M3 with 
