AGRICULTURAL TEXT-BOOK. 271 



Riga. Dutch. 



Magnesia, - 0.22 14.83 14.52 



Oxide of iron, - 3.67 125 068 



Phosphoric acid, 40.11 36.42 37.64 



Sulphuric acid, - 2.47 216 



Sulphate of lime, 1.70 



Chlorine, 0.17 0.29 



Chloride of sodium, - 1.55 



Silica, 0.92 10.58 560 



Percentage of ash, 4,63 



602. Inorganic analysis of English (A;) and American (B,) 

 Linseed cake. (Johnston.) 



A. B. 



Alkaline salts, - - 32.72 38.28 



Phosphates of lime and magnesia, - 49.44 56.40 



Lime, - - 5.06 1.25 



Magnesia, 1.57 trace. 



Silica and sand, 11.21 4.07 



Percentage of ash, - - 7.3 6.04 



The alkaline phosphates are included among the alkaline salts. 



603. When the Flax plant is steeped in the ordinary way of 

 preparing it for the flax-mill, much of the saline matter it con 

 tains is extracted by the water. This water, when evaporated 

 (in Ireland) left a dry solid extract, which being burned gave 

 42 per cent of ash, of which the composition was: (Sir R* 

 Kane.) 



Chloiide of Potassiam, - 9.05 



Sulphate of potash, - - -10.48 



Carbonate of potash, - - 9,05 



Carbonate of sodn, - - 31 43 



Phosphate of iron and alumina, 7.62 



Phosphate of lime, - 5.00 



Carbonate of magnesia, 4.76 



Carbonate of lime, ... 9 5^ 



Silica, - 13.09 



The saline matter is not by any means all removed by steeping 

 Both the outside portion taken off at the flax-mill, and the pure fibre 

 leave when burned a considerable proportion of ash. 



