African. The Manganja negroes of the Zambesi use Strophanthus poison on their arrows ; and in 1861^ Sir John 
Kirk^ as the result of receiving a slight wound, perceived that it could have a place in medicine for its effect on the heart. 
In consequence of his efforts, its toxicology was studied in Edinburgh, and it became an official drug. The Pharma- 
copoeias usually define the drug as derived from Strophanthus, Kombe ; but S. hispidus^ which occurs on the Guinea 
Coast, is almost, if not quite, the same thing. S* dichotomus of Burma and Malaya will be found planted nearby. 
Of Bouea microphylla mention has already been made on p. 38. Bouea macrophylla is planted on Lawn Z ; 
it is the Kundangan of the Malays, and gives a good fruit, better known in Malacca than in Singapore. The allied 
Hog-plum, Spondias mangifera^ is a tree growing close to it. There are many races of the Hog-plum, and if carefully 
selected, something might be got out of it worth preserving. The fruit is in appearance like a mango, and the tree is 
of the same family. 
Picralima Klaineana, a moderate sized tree of the Guinea Coast, with intense bitterness in its leaves and fruit, 
is planted near. The negroes of West Africa resort to it as a tonic at the end of a fatiguing day. 
Garcinia cochinchinensis follows ; it has acid fruits and is cultivated for them in Cochin China. Nearby are two 
species of Caryocar, C. villosum standing below the path and C. nuciferum above. They are considerable trees of 
South America, with timber that appears to be durable as well as possessing other good qualities. They produce 
excellent nuts, which are at present rarely exported on account of the difficulty of getting them to the coast. The oil 
of these nuts is bland like almond oil. 
The Indian Sal Tree, Shorea robustaf is on the slope a little higher. In the climate of Singapore, it produces a 
swollen and gorged bark which ruptures and is obviously unhealthy, so that this most useful timber tree has no chance 
of long survival here. 
Sapium Aucuparium is near it ; once it was thought a possible rubber tree, but what it yields is no more than bird- 
lime. 
Behind are two trees of the Brazil Nut, Bertholletia excelsa. This useful tree grows well in Malaya, and in the 
Economic Garden used to bear freely where two individuals were planted together. It has not been proved, but it is 
thought possible that fertilisation from a separate plant may be necessary with it. 
Bomhax malabaricum is placed here ; it is a tree which furnishes a kind of kapok. In India, its soft perishable 
timber is largely used for making boxes for packing tea for export. 
Well above the path, the Durian Tree, Dario zibethinaSj is seen in perfection, and at the right season there is 
generally a fair supply of the prickly fruits. 
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