136 On the Daltonian Tkemy of [Fkb, 



Number of Weight of an 



atoms. integrant particle. 



204. Nitrate of magnesia . . \ n -\- \ m 9-171 "^ 



205. Nitrate of lime \ n + \ I 10^423 « 



£?06. Nitrate of barytes 1 n + 1 I 16-534 ^ 



207. Nitrate of strontian .. 1 n + 1 str 13'703 « 



208. Nitrate of ammonia- 7 ^ ^ . 1 nc m-i h 



J . >4?i-f3w+la 36-251 '' 



and- magnesia ... 3 



209. Nitrate of copper .. .. 2 71 + 1 c 23*606 ' 



210. Subnitrate of copper . . 1 ?? + 2 c 26-803' ' 



211. Nitrate of iron 2 11 + \ i 22-272"^ 



212. Pcrnitrate of iron . . . . 3 w + 1 i 30-075 ^ 



•^ According to tills statement, we have 6-S03 : 2-368 :: 100 : 

 34'808. Now I have reason to believe that the salt is composed 

 of 100 acid + 34-729 base, which almost coincides with the 

 statement in the table. VVenzel states the composition of the salt 

 100 acid + 38-^i8 base, which, considering the difficulty of the 

 analyses, is by no means a bad result. All the other analyst^ 

 deviate still farther from the trutii. 



"" 6-803 : 2-368 :: 100 : 53-2. Now according to Kirwan's 

 analysis the salt is composed of 100 acid + 55-70 base. I have 

 reason to believe that the correct composition is 100 acid + 53-091 

 base. 



^ According to this statement 6'803 : 9-731 :: 100 : 143-03. Now 

 according to the analysis of Berzelius the salt is composed of 100 

 acid + 140-73 base (Gilbert's Annalen, 1812, p. 165), I have 

 reason to befieve that the correct constituents are 100 acid + 142- 71 

 base. 



s This gives us 6-803 : 6-9 :: 100 : 101-42. Now Vauquehn's 

 analysis gives us 100 acid + 98-347 base, which approaches very 

 closely to the number in the table. 1 have reason to believe that 

 the correct constituents of the salt are 100 acid + 101-193 base. 



'' This supposes the salt to be composed of 3 integrant particles 

 of nitrate of magnesia and 1 integrant particle of nitrate of am- 

 inooia. This approaches nearest to the analysis of Fourcroy, though 

 it does not agree with it, 



' Both of these s;i]ts are known to exist ; but tliey have not been 

 subjected to analysis. 1 have reason to believe that the common 

 nitrate of copper, when methods of analysing it have been disco- 

 vered, will be found composed as the salt No. 209 in the table. 

 The subnitrate has tieen analysed by Berzelius, who found it com- 

 posed of 100 acid + 349-2 base. Proust obtained 16 acid + 67 

 oxide, or 100 acid + 418-7 'la^c. The mean of these is 100 acid 

 + 383-9 base, which is probably near the truth. The theoretical 

 numbers are 100 acid + .^86-67 base. 



'^ It is well known that these two salts exist ; though it would be 

 scarcely possible to subject them to a rigid analysis. The number.^ 



