3 4 2 THE HEMP CKOP. 



natural state. The percentage of inorganic or mineral 

 matter may be taken at from 5 to 6 per cent, in the seed, 

 and at from 4 to 5 per cent, in the entire plant. The ash of 

 the seed has been examined by Leuchtweiss 1 and by Way, 

 and that of the entire plant by Kane and by Daubeny, 

 the results of whose analyses are now given : 

 INORGANIC CONSTITUENTS OF HEMP-SEED. 



Leuchtweiss. Way. 



Potash, 21-67 1574 



Soda, -60 1-49 



Lime, 2671 3'56 



Magnesia, 1-00 15'81 



Oxide of Iron, 77 '57 



Phosphoric acid, 34'96 55'84 



Sulphuric acid, '10 T32 



Silica, 14-04 5'11 



Chloride of Sodium, '09 '56 



100-00 100.00 

 Percentage of ash, 5'60 4'62 



Although there is a considerable discrepancy between 

 these two analyses, still they accord in the principal 

 features of the constituents of seeds, viz., the large pro- 

 portions of phosphoric acid and of potash, and the small 

 proportions of soda and its compounds, compared with the 

 proportions found in other parts of plants. 



The following determination of the inorganic constitu- 

 ents of the entire plant is the mean result of four analyses 

 by Kane and Daubeny : 



Potash, 9-93 



Soda, -50 



Lime, 42'91 



Magnesia. 5"47 



Oxide of Iron, 271 



Phosphoric acid, 5 '28 



Sulphuric acid, 1'28 



Silica, 8-20 



Chloride of Sodium, 1'41 



100-00 



Percentage of ash in plant dried at 212, 4'54 



1 Revue Scien. et lad., toine iii. p. 22. 



