GROWN ON THE NEILGHERRY HILLS. 43 
jd 
Red Bark from small branches broken by the wind. 
C. micrantha, bark from a plant of eighteen months’ growth. 
C. micrantha; bark from upper part of plant of eighteen 
months’ growth injured by the rains. 
Q. micrantha, bark from branches broken by the wind. 
9.C. Pahudiana, grown in open ground. 
10, Green leaves of Red Bark dried in the shade. 
11. Green leaves of C. officinalis dried in the shade. 
12. Green leaves of O. micrantha dried in the shade. 
13. Specimen of wood of C. succirubra, showing the injury done 
by the continued rains. 
cc 
e 
Report to ‘the Under Secretary of State for India, on the Bark and 
Leaves sent home in October, 1863, for Examination, by J. E. Howard, 
Esq., F.LS. 
The box of specimens reached. me in. good condition, and has fur- 
nished valuable materials for further research, although the quantity of 
bark sent this time amounted to. but a few ounces in weight. Several 
pounds’ weight of leaves (well dried and with a marked tea-like fra- 
grance) have allowed me the opportunity of following various lines of 
experiment in order to ascertain their probable commercial value. I. 
regret’ to be obliged. to. confirm the opinion I expressed in my last, 
that the leaves will.not supply material for the extraction of Quinine, 
although the quantity of the first rough precipitate from an acid solu- 
tion, having the appearance of a hydrated alkaloid, is considerably 
more than I succeeded in. obtaining: before, being equal to-1-31 per 
cent. of the weight of the leaves. Of this a small portion was soluble 
in ether, to the extent of 0°17 per cent., forming a clear yellow. solu-: 
tion, which precipitates on the addition of a solution of oxalic acid in 
spirit of wine.» Nevertheless, the further prosecution of the inquiry 
and the attempt to purify the alkaloid showed me clearly that I had to 
do witha state of things very different from that which exists in the 
bark, and that I should not succeed in obtaining an available salt of 
Quinine. I hope to be able to prosecute this research on a still larger 
quantity of the material, in order to test the conclusions to which my 
present investigation tends. The alkaloid exists in the leaves in very 
intimate relationship with the green colouring-matter. This latter sub- 
stance is well deserving of a more elaborate investigation, as it seems 
