40, abstracted in _J. S. C. Ind._, 1906, p. 128)
gives these values:--

_______________________________________________________
| | | | |
| Saponification | Acidity, | Iodine | Unsaponifiable, |
| Equivalent.[12]| Per Cent. | No. | Per Cent. |
|________________|___________|________|_________________|
| | | | |
| 209 | 1.67 | 2.28 | 1.44 |
|________________|___________|________|_________________|

It is a hard fat, nearly white, possessing neither taste nor
characteristic odour and solidifying at about 27 deg. C.

_Oil of Inoy-kernel._--(_Bulletin Imp. Inst._, 1906, p. 201). The seeds
of Poga oleosa from West Africa yield on extraction an oil which gives
the figures quoted below, and is suggested as a soap-maker's material:--

__________________________________
| | | |
| Saponification | Iodine | Titre, |
| Equivalent. | No. | deg.C. |
|________________|________|________|
| | | |
| 304 | 89.75 | 22 |
|________________|________|________|

ROSIN.

Rosin is the residuum remaining after distillation of spirits of
turpentine from the crude oleo-resin exuded by several species of the
pine, which abound in America, particularly in North Carolina, and also
flourish in France and Spain. The gigantic forests of the United States
consist principally of the long-leaved pine, _Pinus palustris
(Australis)_, whilst the French and Spanish oleo-resin is chiefly
obtained from _Pinus pinaster_, which is largely cultivated.

Rosin is a brittle, tasteless, transparent substance having a smooth
shining fracture and melting at about 135 deg. C. (275 deg. F.). The American
variety possesses a characteristic aromatic odour, which is lacking in
those from France and Spain. It is graded by samples taken out of the
top of every barrel, and cut into 7/8 of an inch cubes, which must be
uniform in size--the shade of colour of the cube determines its grade
and value.

The grades are as follows:--

W. W. (Water white.)
W. G. (Window glass.)
N. (Extra pale.)
M. (Pale.)
K. (Low pale.)
I. (Good No. 1.)
H. (No. 1.)
G. (Low No. 1.)
F. (Good No. 2.)
E. (No. 2.)
D. (Good strain.)