AGRICULTURAL CHEMISTRY. 



25 



acid (H CI), composed of one atom of chlorine, 36, 

 to one of hydrogen, 1, making 37. In English works 

 this last is usually called spirit of salt ; in this country 

 it is almost uniformly called muriatic aac?,iand will be so 

 denominated in this work. We have then seven min- 

 eral acids ; and the reader will perceive, if he looks at 

 Table I., near the bottom of the oxygen compounds, 

 that we have also 7 oxides, viz., oxide of iron, oxide 

 of manganese, potash, soda, &c. Now, in order to 

 form those combinations, commonly denominated salts,' 

 one of the foregoing seven acids must be combined 

 with one of these oxides. From the fact, that the 

 oxides constitute an important part of the salts, they 

 are called also hases. For the purpose of aiding the 

 memory, we will here arrange these acids and bases, 

 together with the generic names of the salts, side by 

 side. 



TABLE III. 



40. There are other salts, formed in a different man- 

 ner ; as common salt, constituted of chlorine and sodi- 

 2 



