1921. ] The Eighth Indian Science Congress. C@XXiX 
A preliminary note on the constituents of Pogostemon par- 
viflorus, Benth.—By D. B. Limaye. 
A crystalline reine has been obtained by distilling the leav es of 
Pooiite mon parv wiet Diag with steam, the mean yield being 0°11 
per cent on t “gin 
The substance jamie at 107"-108° and a 10 per cent solution in alcohol 
gave a porte: of +14°i ldm. tube. Analysis wept to the formula 
Cio 402, ge! the GWesaiien os 3 not been identified with any known com 
pound. It yields a dibromo atlsepe melting - 104°-105°. The 
name ‘‘ Pangli Camphor ” is suggested. 
‘“* Corchorin’’, a glucoside ayia maa leaf.—By HAvIDAR 
Sana and Kumopnati 
white crystalline glucoside h haa acted from the leaves of 
Cor eke capsularis. The pt arate is 11517 7 the optical ro- 
tation —23°6°. The teint is shown to be Co; Os. 
Studies in substituted quaternary a azonium compounds 
containing an asymmetric nitrogen atom. Part IV 
Additive compounds of thiocarbamide with azonium 
iodides.— By B. K. Stnex and Mrrt Lat. 
found that Sa Ne quaternary azoniu m iodides unite sith 
sseeanbeannihedt in the molecular ratio of 2: 1 as in the a folaekiog cases: 
((CgHs) (CH3) Sere (NHg) NI]. C,S.NyHs. 
(CEL) (CH3) (CyH;) (NHe) NIj. C.S.N4Hs. 
[(CgHs) (CsH1) (C7Hz) (NHq) NI]. C,S:NyHs. 
r henylallylylbenzylazonium iodide forms a monothiocarbamide com- 
ou 
[(CgHs) (CsH,) C7Hy) (NH2) NI]. CSN,H, 
Phenyldimethy] and phenyldiethyl compounds do not unite at all with 
thiocarbamide. 
New methods of extraction of caffeine from tea dust.— 
By N. R. Cuars BEIEE 
Mercuric sulphate as an analytical reagent in organic 
chemistry.—By S. C. CHATTERJEE. 
The er describes some reactions between some of the more com 
Note on the citrates of calcium and strontium.—By K. P. 
CHATTERJEE. 
)g16H,20 is ghar when strong solutions of sodium 
citrate ay gee chlor ide mixed. It is jelly-like, hygroscopic and 
readily soluble in water. It passes rapidly ‘its Cas (CgH<O7 ),6H,0. 
