ANALYSTS OF BARK FROM INDIA. 
243 
23. I trust I may be pardoned for expressing my gratification at finding, from per¬ 
sonal examination, that the Government cinchona plantations offer in their present stage 
such unmistakable indications of success. 
24. I have the honour to forward by banghy four specimens of alkaloids prepared 
from red bark, and illustrative of the foregoing report .—Madras Quarterly Journal. 
REPORT OF AN ANALYSIS OF THE SIXTH REMITTANCE OF BARK 
FROM INDIA. 
BY J. E. HOWARD, ESQ., F.L.S. 
To the Under-Secretary of State for India. 
August 28th, 1867. 
Sir,—I have to report on four samples of Neilgherry chinchona barks forwarded to 
me for analysis, with a view of throwing more light on the efficiency of mossing. The 
“ mossed crespilla bark ” is improved in appearance,* as well as in produce. The “strong 
growing variety of C. officinalis" exactly reproduces the bark called coloracla del Iley 
de Loja, and is therefore the C. officinalis , var. Bonplandiana colorata. The C. Uritu- 
singa bark has a poor and sickly look, reminding of the circumstances under which this 
plant has been grown, including the effects of the sunstroke from which it suffered on 
first reaching India. The bark of C. Palxudiana is improved in produce of alkaloid, but 
would not find so much favour in the eyes of ordinary purchasers as the more slender 
quills last sent. 
No. 1. Mossed crespilla bark, three years and a half old. 
Crystallized sulphates, per 100 parts.2 - 46 
Alkaloids soluble in ether, chiefly uncrystallized quininef . . 0’44 
Insoluble in ether (chinchonicine and chinchonine)4 . . . 0’86 
3-76 
No. 2. Strong growing variety of C. officinalis , three years and a half old. 
Crystallized sulphates.. 2 - 92 
Soluble in ether (chinchonidine and quinine).0 41 
Insoluble in ether (chinchonicine and chinchonine) .... 1‘20 
4-53 
No. 3. C. Uritusinga, received from Mr. Howard, original bark. 
Total weight of precipitated alkaloids.. . 243 
Oxalate quinine.1'40 
Uncrystallized quinine.0T7 
Chinchonicine.0*70 
Resin and loss.0T6 
-2-43 
No. 4. C. Pahudiana , under moss, five years old. 
Crystallized sulphates.1*60 
Soluble in ether (quinine and aricine ?).0*61 
Insoluble in ether (chinchonine), a trace. 
2-21 
Memo .—None of the above crystallized sulphates would perfectly stand the test, all 
* It now resembles more the Loja noueux of Jussieu. 
f The remainder probably chinchonidine. I neglected to substitute the word chinchonidine 
for the word quinidinein treating of the var. crispa in my last report. The analyses in which 
it appears were quoted verbatim from Pereira, and were made fourteen or fifteen years ago, 
when accuracy as to this discrimination was not valued as it now is. I have no reason, from 
recent analysis, to believe that quinidino is contained in the Loja barks. 
4 The amount of crystallized chinchonine is small in all the Loja barks. 
E 2 
