120 
* weighing 97,000 lbs., chiefly druggists’ descriptions have been 
*€ offered and sold at from 24d. to 6d. per pound.” 
As inquiry has been made at Kew in regard to the origin of this , 
African Cinchona bark, it may be well to give a brief ac count of it. 
A sample of Cinchona bark grown at the Port ro island of 
St. Thomas (São Thomé), in the Gulf of Guinea, West Coast of Africa, 
was presented to the Museums " the Royal Gai dens, hee in 1884, by 
Messrs. ‘Thomas Christy and This sample was accompanied by a 
return of analysis, giving the following results :—Crystallised quinine, 
2-64 : crystallised quinidine, 0:11 ; crystallised cinchonidine, 0°48 ; 
cinchonine (alkaloid), 4°06 ; amorphous l: 
In February 1884, Mr. H. H. John ston, C. B., read a paper before 
the Society of Arts on the Portuguese Colonies of ‘West Africa, and he 
gave an account of a visit paid to the Quina (Cinchona) plantations in 
E Leno of São Thomé (Journal of the Society of Arts, XXXII. 
35). These rtis ascend to about 3,500 feet. Mr. Johnston 
rade ‘land is sold for a mere nothing in Sao TI ones for only about one 
* third of the island i is under cultivation Pl. . The climate on 
“ the uplands is perfectly salubrious." 
From a note by C. Tille in Móller's Deutsche Gartnerzeitung, No. 13, 
April 20, 1892, p. 139, it appears that Cinchona of two species is grown 
at Sáo homá, viz., Cinchona succirubra and C.Calisaya. The estimated 
vinione of trees under cultivation is placed at 500. 
A few Cinchona trees may be also cultivated at the Spanish island of 
Fernando Po, also in the Gulf of Guinea, off the coast of the Cameroons. 
Messrs. Lewis & Peat express the opinion “no doubt a portion (of the 
* Cinchona bark sold in London) does come from Fernando Po, but the 
greater portion of it comes from the island of St. Thomas—in fact 
cultivated Cinchona succirubra bark sold at public sale (1894) was 
* grown at the island of Sdo Thomé, West Coast of Africa, and we 
si ine ‘ve it comes from no other place.’ 
evident from the particulars here given that the West African 
olas bark received in this country is derived solelv from cultivated 
trees, and these have been grown from seeds or pes originally obtained 
from the home of the Cinchonas in South Ameriea. Further, that 
nearly the whole of this bark, if not the whole, comes from the Portu- 
guese island of São Thomé. We have no evidence that Cinchona is 
cultivated anywhere on the mainland of the West Coast of Africa. 
CCCLXXIV.—DIAGNOSES AFRICANZ, III. 
APOCYNACEZ. 
Auctore O. STAPF. 
. Tabernaemontana inconspicua, Stapf; frutex ganen i ramulis 
graiis, foliis obovato-cuneatis vel obovato-oblongis abrupte et lon 
acuminatis membranaceis nervis moschea utrinque 8-10 lé: prorsus 
arcuatis subtus prominulis is mien etae petiolo — cymis 
terminalibus paucifioris itn ad florem solitarium reductis racemis 
geminatis vel in panicula udine, podata brevi, pedicellis sacl. 
gracilibus, calyce 5-partito lobis ‘ovato-lanceolatis acutis intus basi . 
