408 MR. W. T. T. DYER ON SOME NEW ECONOMIC 
sent samples of the leaves and bark of the tree yielding Inham- 
bane copal. Supposing that Consul O'Neill's collectors have 
made no mistake in the identification, Professor Oliver, the 
Keeper of the Kew Herbarium, was satisfied that the leaves 
afforded sufficient data to fix the species as Copaifera Gorskiana, 
Benth. Although it is stated in the ‘Flora of Tropical Africa’ 
(vol. ii. p. 315), on the authority of Sir John Kirk, that this tree 
affords a good hard timber, it was not known before that it 
yielded a copal suitable for commercial purposes. 
The identification is the more interesting on aecount of the 
resemblance of Inhambane to Accra copal. The latter has long 
been suspected to be produced by a species of Copaifera. Kierra- 
Leone copal is ascertained to be derived from Copazfera Guibour- 
tiana, Benth. Students of tropical African botany are familiar 
with the occurrence of the same genera and even species on 
both the east and west coasts. Landolphia florida, one of the 
African rubber-vines, is a striking example of this wide distri- 
bution. 
3. Ogea Gum. 
This is a substance about which Captain Moloney wrote to me 
from Lagos (April 10, 1883):—‘ I fancy we have here a valuable 
copal. I am very desirous to promote conservancy of the tree 
producing it, and develop it into another industry and conse- 
quent export. The tree from which this is obtained is called in 
Yoruba ‘ Ogea,’ and is mercilessly used at present, natives attach- 
ing no value to it. I send a specimen of the leaf, wood, fruit, 
and flower, and some of the copal. Any quantity of seed should 
be procurable here for development elsewhere. Notice the fruit, 
and that the copal burns readily ; in fact it is used by the natives 
for fires and for light. Women use it powdered on the body asa 
perfume. Notice the boring also of the tree by a grub, which 
would seem to be a provision of nature; for out of the boring 
exudes the juice. Isendalsoa black specimen, which seems to be 
affected or decomposed by the swamp from which I have had it 
dug. The favourite habitat of the Ogea-tree seems to be swamp- 
land." 
Professor Oliver reported upon the specimens that the tree 
was a Daniellia, though the maierial was scarcely adequate for 
fixing the species. But it seemed not to be D. thurifera 
(Bennett in Pharm. Journ. 1855, xiv. p. 252), the frankincense- 
