21 
as it does, a yield of quercetin (51:19 per cent.) which closely 
nm with that required by UM. s own equation (51:61 
cent.) These figures, however, prove without doubt that the 
glucoside present in Cape s ibid cannot be identical with viola- 
quercitrin, and must retoro be a i. glucoside of quercetin. 
lt is proposed to name this substance Osyritrin, derived from one 
of the names of Cape sumach (Os yris compressa 
The Tannin.—Altho oth it is not intended in ‘these investiga- 
stoi to study thoroughly the tannin matters which are present in 
the plants under in vestigation, it is des irable to determine the 
mpa S 
colouring matters. For this  purposs the ase piis “filtrate from 
the osyritrin, after removal of final traces of this glucoside by 
further evaporation and cooling, was treated with lead acetate 
solution drop by drop imul on filtration from the dark-coloured 
precipitate, a pale orange-coloure liquid was obtained ; the latter 
was then treated Ta iam trien hydrogen to remove lead, and 
evaporated to dryne 
“In this way, an ` orange- -coloured, hygroscopic, transparent, 
Dilute alkalis disiel uit it, forming orange-yellow iutos which 
became darker on heating, and on exposure to air developed a 
blüod-red tint. It was found to be a tannin etie ze on 
treatment with boiling dilute sulphuric acid there med, 
together with a sugar, a reddish-brown, insoluble podist slebety 
resembling the so-called anhydrides or drm quce air are 
produced from so many tannin matters in this v On fusion with 
alkali, both glucoside and anhydride yielded ved eidthaale 'adid. 
“This tannin closely resembles, both in description "ue pro- 
perties, quinotannie ac cid (Schwarz, Jahresber., 1851, 411) - 
vatannic acid Serica tos Annalen, 79, 129), which a 
dodónipos ed by acid into a sugar and an anhydride, and yield 
protocatechure acid on fusion with alkali. 
yeing trials with Cape sumach were carried out on woollen 
cloth mordanted with chromium, aluminium, tin, and iron; full 
buff, pale orange yellow, pe “yellow, and pale greenish- black 
shades were obtained, respectively.” 
DXCV.—MISCELLANEOUS NOTES. 
Mr. J. A. GAMMIE, Deputy Superintendent of the Government 
Cinchona Plantation in Sikkim, has retired from that post. 
Mr. i 
always met with warm appreciation from the Government of 
Bengal. His share in working ae ina practical form the process 
y which a cheap supply of qui is now ensured to India 
has E Pod recorded in the Rod Bulletin (1890, pp. ey 24). 
A few words may be quoted from the Memorandum by Mr. 
C.H. Wood, ae Bibb serene Quinologist, already printed :— 
* With t perseverance he mastered one detail after onu 
using wa the simple appliances that he found at hand, until he 
