456 WEST AFRICAN FORESTS AND FORESTRY 
whole nut. The fat is solid at ordinary temperatures. In 1913 some 
of these nuts were shipped from the Cross River and were valued in 
Liverpool as Shea nuts, only at a rather lesser rate. According to 
the Imperial Institute the analysis showed : 
Specific gravity at oe BoC... 0°860 
Acid value .. eo .. 25°3 
Saponification ealuecs ‘ i .. 187°6 
Iodine value ., aa ey .. 56°2 
Hehner value sé 2 .. 95°4 
Reichert-Meiss] value - ats Nil 
Unsaponifiable matter a ae 2:6 approx. 
Titer test =... an af «. 47°8°C. 
Dumoria Heckeli ? (Baco or Abaku).—Although the Gold Coast 
name is given, these nuts are also found in the Oban forest. The nuts 
are large, considerably longer than those of Mimusops, but rather 
thinner. They are of a pale-brown colour, with a thick, hard, woody 
shell, most of which is smooth and shiny, only one small part of the 
surface being rough and forming almost a nodule. According to the 
Imperial Institute! analysis of the Gold Coast samples, the whole 
nuts contain 21 per cent. of fat or 60°5 per cent. in the kernels alone. 
The fat is solid and of a creamy white colour. The soap-makers 
reported that it was about equal to middling quality palm oil. It 
is also stated that dried kernels in good condition would be worth 
£13 per ton. According to the Imperial Institute! analysis the 
fat showed : 
Specific gravity at ee BoC... 0°855 
Acid value .. ae .. «84:7 
Saponification valde. ibs af -. 188°4 
Iodine value .. és a -- 513 
Titer test .. ‘ a -- 51°2°C. 
Unsaponifiable miter as ae 1:3 
The small nuts of Mimusops multinervis and M. lacera have not 
been examined as to their oil or other content. The hard nuts of 
M. lacera appear to contain a fair proportion of oil. 
In this family, too, are the nuts of Chrysophyllum Africanum 
and other species, for which a use has yet not been found. Finally, 
there are the numerous and fine seeds of Omphalocarpum elatum, known 
as Ikassa by the Benis, which are probably also oil-bearing. 
The next important family is the Olacacex, Heisteria parvifolia, 
known as Ikereoha by the Benis. It yields an edible nut which 
is white on the exterior and has a black-coloured shell over the actual 
1 Colonial Report, 88, Oil Seeds, Fats and Waxes, Imperial Institute, 1914. 
