BOTANICAL AND PHARMACEUTICAL DESIDERATA. 151 
portant to know whether the myrrh of commerce be the 
growth of Arabia or of Abyssinia and the adjacent parts of 
Africa. 
Euphorbium Gum. — What is the species of Euphorbia 
affording the substance thus called in commerce, and which 
comes from Mogadore? The stems found in the com- 
mercial Euphorbium are not those of the plant figured in 
Jackson's Morocco, nor yet are they those oiEuphorbia offici- 
narum or E. Canariensis. 
Shea Butter. — Living plants and specimens in flowers 
and fruits are required. 
Gaiam Butter. — Is this identical with the Shea butter of 
Park ? 
Camwood. — The source of the dye-wood so called, from 
the Gold Coast, with specimens of the tree are a deside- 
ratum. 
Bucku of the South African Hottentots. — To determine 
the different kinds collected by the natives. 
Senna. — What plant yields the African Senna ? Rich- 
ardson says it is brought from Ghat in the Sahara. 
•African Oak or African Teak. — This wood, though large- 
ly imported by our royal dockyards from the Western coast 
of Africa, is totally unknown botanically. 
Ichaboe Resin. — The Ichaboe ships did, on more than 
one occasion, bring from the adjacent shores of Africa a 
gum-resin, constituted of the dead stems of a Geranium, 
allied to, if not identical with, the South African Geranium 
spinosum of Linnaeus (Monsonia Burmanni, D. C). An 
account of this substance appeared in Eden's voyage in 
search for Nitre and the true nature of Guano. London : 
1S46.) None is now to be procured in England, and it is be- 
lieved that the nature and property of this singular gum- 
resin were not examined. Perfect specimens of the gum- 
resin and the plant are desired. 
N. B. Much information remains to be obtained respect- 
ing the useful woods, gums, dye-stuffs, &c, of Western 
Africa. 
