384 MR. D. MORRIS ON ERYTHROXYLON COCA. 
chemical characteristics, the leaves contain a large amount (‘76 
per cent.) of cocaine, about one half of which, however, is un- 
erystallizable. In this respect it is similar to what is known in 
commerce as Truxillo Coca. 
It may be distinguished as :— 
Var. NOVO-GRANATENSE, Morris in Kew Bull. Jan. 1889; foliis 
oblongo- vel obovato-lanceolatis, basi #qualiter cuneato-acutis, 
apice rotundatis vel emarginatis membranaceis superne læte viren- 
tibus, subtus subglaucis. 
This is figured in Bentley and Trimen's * Medicinal Plants, 
vol. i. pl. 40, and in ‘The Garden, vol. ix. (1876) p. 445. 
Fig. 2 (above) is from the latter. Specimens from cultivated 
plants have been received from Jamaiea and St. Lucia, aud 
others very similar from the Agricultural and Horticultural 
Society of India. 
Intermediate between the type and the variety just described 
are many forms of Coca which exhibit characters more or less 
distinct. Specimens collected in South America by Spruce in 
1854 on the Rio Negro are of this intermediate character. Cul- 
tivated specimens from the Botanical Gardens, Java, and from 
Darjeeling (Cresswell) and Alipore ( Blechynden) agree with these; 
they yield, as a rule, a high percentage (43) of crystallizable 
cocaine and a small percentage (‘08 to 17) of uncrystallizable 
cocaine. 
These, briefly stated, are some of the points which distinguish 
various forms of Erythroxylon Coca. The variety here described 
may be looked upon as a lowland plant capable of cultivation 
under hotter conditions than the type. It yields, it is true, less 
erystallizable cocaine than other forms, but in total alkaloid it is 
quite as rich. Like Cinchona succirubra,it may be useful for 
making decoctions. In this respect there is a singular parallelism 
between Coca-plants and Cinchona-plants. 
[A detailed account of Erythroxylon Coca as an economic 
plant is given in the * Kew Bulletin, Jan. 1889. Its early history 
is further discussed in the ‘Kew Bulletin,’ Sept. 1889, pp. 221, 
222.) 
