448 WEST AFRICAN FORESTS AND FORESTRY 
According to the very valuable investigations of the Imperial 
Institute : 
The proportion of hard seed-coat (by weight), 20°7 per cent. 
The proportion of kernel in bean (by weight), 79:3 per cent. 
The amount of oil contained in the whole, 31:2 per cent. 
The amount of oil contained in the kernels, 39 per cent. 
When the oil is left to stand it deposits a quantity of solid fat. 
On trial, the oil was found to yield rather a soft soap, and was stated 
to be worth only about £21 per ton. The cold-pressed oil was of a 
golden yellow colour, and the hot-drawn oil a dull yellow and rather 
thick. From analysis it was found that the meal was very nutritious, 
containing over 39 per cent. of proteids, and if it could be used as a 
feeding-cake it would be worth from £5 to £5 10s. per ton (pre-war 
rates). 
The constants of the oil from the Southern Nigerian seeds are : 
Iodine value ee oe oy -. 87°07 
Acid value.. ae _ ay -- 14°93 
Titer test .. Ss es x .- 50°15°C. 
The composition of the meal after extraction of the oil is as 
follows : 
Per cent. 
Moisture .. a 8: She oe -. 12°9 
Ash i ey aa os oe a ba) 
Proteins .. a a ise ate -- 34°8 
Fibre we 46 ie -- 68 
Sugar (dextsose)..; ‘ a ae 692 
Carbohydrates (other tian sia Ss -. 33:7 
The oil on analysis gave the following results : 
Specific gravity at 15:5° C. Saat Fy): -. 0°9194 
Saponification value .. . i .. 184°2 
Free fatty acids, per cent. .. ee -- O7 
Analysis of pressed cake : 
Per cent. 
Oil .. ae us a 2s ae -. 12°0 
Moisture .. be os es oe . = =9°9 
Crude proteins... Be ‘ox es -. 33-2 
Carbohydrates .. aie Re oe -. 34:8 
Fibre is 5°7 
Ash.. 4°65 
The oil would make a first-class edible oil. The value of the 
beans is stated to be about £6 per ton c.if. London, August 1909, 
