1814.] Chemical Proportions. if 



Number of Weight of att 



atoms. integrant particle. 



268 Chloride of barytium 1 ch + 1 b 13*229 k 



264 Chloride of strontium 1 ch + 1 st 10*398 l 



265 Chloride of calcium 1 ch + 1 c .... 7* 1 18 ra 



266' Chloride of magnesium 1 ch + 1 m . . . . 5*866 a 



267 Chloride of silver 1 ch + 1 s 18*212 • 



268 Prochloride of mercury 1 ch + 1 m 29*498 p 



Now muriatic acid is a compound of 75*731 chlorine + 2*23 

 hydrogen. Therefore 100 muriatic acid contains 2*86 hydrogen. We 

 must suppose this hydrogen to find in the ammonia a quantity of 

 oxygen capable of converting it into water. Now 2*86 hydrogen 

 require 21? oxygen to convert them into water. Therefore am- 

 monia must be a compound of 



Ammonium 24*51 1 . . or . .100 



Oxygen 21*666 . . or . . 88*39 



And chloride of ammonium is a compound of 97*14 chlorine + 

 24*511 ammonium. 



w This supposes chloride of barytium {muriate of harytes) to be 

 composed of 100 chlorine + 194*115 barytium. Now the analysis 

 ©f Berzelius gives us 100 chlorine + 197'2S barytium. 



1 According to this statement chloride of strontium {muriate of 

 itrontian) is a compound of 100 chlorine + 131*17 strontium. 

 Now analysis gives 100 chlorine -j- 133*78 strontium. 



" According to this statement, chloride of calcium (calcined 

 miu kite of lime) ought to be composed of 100 chlorine and 58*25 

 calcium. Now Dr. Marcet's analysis gives 100 chlorine + 57*732 

 calcium, and Professor Berzelius's 100 chlorine + 58*923 calcium. 

 The mean of the two gives 100 chlorine 4- 58*32 calcium, which 

 almost coincides with the theoretic number. 



" These are the theoretic numbers. We might deduce an 

 experimental result from some of the analyses already made of 

 muriate of magnesia ; hut as it would involve several hypothetic 

 particulars I have not done it. 



° If we suppose the weight of an atom of silrer to be 12*618, as 

 I have made it in a preceding part of this table : then horn silver 

 would be a compound of 100 chlorine and 280*5 silver: but this 

 does not agree with experiment. Wenzel found it a compound of 

 24*67 chlorine + 75 33 silver, Rose and Bucholz of 25 chlorine 

 and 75 lUrer, Mr. John Davy 24*5 chlorine and 7- r> '5 silver, and 

 Berzelius 24623 chlorine ■+■ 7-5*377 silver. The mean of these 

 experiments supposes this chloride a compound of 100 chlorine ■+■ 

 :J0-1*89 silver. To obtain the same theoretic result we must suppose 

 an -.torn of silves to weigh 13*71'1, and the oxide of silver to be 

 composed of 100 silver + 7'-'91 oxygen. 



p According to this statement, prochloride of mercury {calomel) 

 should be composed of 100 chlorine ■+• . r >55*8 mercury. We have 



