138 On the Dallon'ian Theory nf [Fkb, 



Number of Weight of an 



atoms. integrant particle, 



224. Xilrate of bismuth .. 1 n + 1 l 16797" 



225. Nitrate of uranium .. . \ n ■{- \ 2c 21*803" 



The preceding list comprehends all the nitrates that have been 

 subjected to any analysis by chemists. I conceive that arsenic, 

 chromium, molybdenum, tungsten, columbium, and tin, are not 

 susceptible of forming oxides capable of uniting with nitric acid. 

 The new metals, palladium, rhodium, osmium, and iridium, have 

 been hitherto obtained in too small quantities to admit of any 

 regular analysis of the salts which their oxides form witli acids. 

 The nitrate of antimony possesses so little permanence that it would 

 be scarcely possible to subject it to analysis. The nitrates of gold and 

 cobalt have been often formed, though very little examined. The 

 nitrates of manganese, tellurium, titanium, and cerium, have been 

 hitherto but superficially examined. Tlie nitrates of alumina, 

 glucina, yttria, and zirconia, might have been given from theory if 

 we had possessed any means of determining whether they contain 

 cne or two atoms of acid. 



If the preceding table be considered as accurate, and I conceive 

 it to be a tolerable approximntion, then the proportions of oxygen 

 in tlie acid and base which constitutes the different salts, will be aji 

 follows : — 



Oxygen Oxygen 



in the acid. in the base. 



Nitrate of potash 5 1 



Nitrate of soda 10 2 



Nitrate of magnesia 5 1 



Nitrate of lime 5 1 



Nitrate of barytcs 5 1 



Nitrate of strontian 5 1 



Nitrate of copper 10 , 2 



Subnitrate of copper 5 4 



Nhrate of iron 10 2 * 



Pernitrate of iron 15 3 



r 

 4 = 56-664 :: 100 : 832*9 ; so that the difference between theory 



and analysis does not exceed 5 per cent. 



" According to tliis statement the salt should be composed of 100 

 acid + M3*4"2 base; for 6*803 : 9994 :: 100 : 145*42. Now 

 Berzelius found the salt to be composed of 100 acid + 142*69 base 

 {Larlok i Kemieii, ii. IT?)- 



" According to tliis statement the salt should be composed of 100 

 acid 4- 220*4 base. Now Bucholz states its constituents to be 100 

 acid + 232 base. This docs not differ more from the theoretical 

 result than might be expected in the anah'sis of so difficult a salt, 



2 



