1818.] 



the Atoms of Chemical Bodies. 



Number of atoms. 



107 defiant gas 



108 Carburetted hydrogen 



109 Chloric ether 



110 Hydrocarbonic oxide 



111 Boracic acid 



1 12 Silica 



113 Hypophosphorous acid 



1 14 Phosphorous acid 



115 Phosphoric acid 



116 Protophosphuretted hydrogen 



117 Perphosphuretted hydrogen. 



118 Protochloride of phosphorus. 



119 Perchloride of phosphorus . . 



120 Phosphuret of carbon 



121 Hyposulphurous acid* 



122 Sulphurous acid 



1 23 Sulphuric acid 



1 24 Chloride of sulphur 



125 Sulphuretted hydrogen 



126 Sulphuret of carbon 



127 Sulphuret of phosphorus . .. 



128 Arsenious acid 



129 Arsenic acid 



130 Choride of arsenic 



131 Sulphuret of arsenic 



132 Oxide of tellurium 



133 Telluretted hydrogen 



134 Protoxide of azote 



135 Deutoxide of azote 



136 Hyponitrous acid 



137 Nitrous acid 



c + 



c + 



2 c + 



3 c + 

 b + 

 s + 



P + 

 p.+ 



P + 



P + 



P + 



P + 



p + 



P + 



s + 



+ 

 + 

 + 

 + 

 + 

 + 



a + 



a + 



a + 



a + 



t + 



t + 



a + 



a + 



a + 



a + 



h . 



h 



h + 1 ch 



o + 1 h . 



o 



o 



o 



o 







h 



h 



ch 



ch 



c 



o 



o 







ch 



h 



c 



1 



2 

 2 

 3 

 2 

 1 

 1 

 2 

 3 

 2 

 1 

 1 

 2 



1 



1 



2 



3 



1 



1 



1 



lp< 



1-5 o . 



2-5 o . 



1-5 ch 



2 5? ., 



. , 



h?., 



. , 



. , 



. , 



. , 



437 



Weight of 



a particle. 



0-875 

 1-000 

 6-250 

 5-375 

 2-875 

 2-000 

 2-500 

 3-500 

 4-500 

 1-750 

 1-625 

 6-000 



10-500 

 2-250 

 3-000 

 4-000 

 5-000 

 6-500 

 2-125 

 4-750 

 3-500? 

 6-250 

 7-250 



11-500 

 8-750? 

 5-000 

 4-125? 

 2-750 

 3-750 

 4-750 

 5-750 



a This acid is formed when zinc or iron is dissolved in sulphur- 

 ous acid. The salt obtained used to be called a sulphuretted 

 sulphite. I conceive that I was the first person who pointed it 

 out as a peculiar acid in the fifth edition of my System of Che- 

 mistry. Gay-Lussac assures us that he had recognized its 

 existence before me ; but I am not aware of any publication of 

 his in which the fact was mentioned previous to the appearance 

 of my work. The composition of hyposulphurous acid is easily 

 deduced from the action of sulphurous acid on zinc or iron. One 

 half of the oxygen in the acid must go to the oxidizement of 

 the zinc or the iron. Of course the acid which unites with these 

 oxides must be composed of sulphur united with one half as 

 much oxygen as exists in sulphurous acid , that is to say, the 

 acid must be a compound of 1 atom sulphur + 1 atom oxygen. 



