126 chemistry of the so'ia uean. 



The Small Black Variety. 



The beans of the small black variety of soya, which were 

 experimented with, were found to contain : — 



Aloisture n -35 per cent. 



Inorganic Constituents (ash) 4-9/ „ 



Organic Constituents .... 83.68 ,, 



The ratio of the inorganic to the organic constituents in the 

 small black beans is therefore i : 16. 83. 



The air-dry black soya beans were found to contain : — 



Albuminoids -9-50 per cent. 



Oil 1 1 . 60 



The results of the analysis of the ash of this variety of soya 

 also demonstrate that phosphatic and potash manure is principally 

 required by the soya. The results of the analysis made of the 

 ash of the small black variety of bean were as follows: — 



Silica 2.93 per cent. 



Calcic Oxide 5- 13 v 



Phosphoric Oxide 38 • 36 „ 



Sulphuric Oxide 3 -09 ^ 



Potassic Oxide 45- 18 ,, 



Sodic Oxide .40 „ 



Ferric Oxide .40 



Magnesic Oxide 4 -So 



Of this small black variety of the soya bean also some were 

 planted on a plot of ground on a hill at Swellendam at the same 

 time as the white variety was planted, and was also harvested 

 at the same time as the white variety. The soil of this plot 

 was poor virgin soil {" Nabank"). Although the ground was 

 not irrigated during the period of growth, the yield of beans 

 was very large. The average height of the mature plant was 

 3 feet 6 inches, and the average weight of the air-dry plant was 

 1.83 I1x The average number of beans in a pod was two to 

 three, and the average w^eight of 100 beans 8.664 grammes, 

 corresponding with i .34 grains per bean. 



The beans obtained from these plants grown at Swellendam 

 contained : — 



Albuminoids 26.95 per cent. 



Oil 17.43 



The pods contained 2.187 per cent, of albuminoids. 

 The hay contained 4.37 per cent, of albuminoids. 

 The leaves contained 11.59 oi albuminoids. 



