518 Scientific Proceedings, Royal Dublin Society. 
Similarly 6 acetobromoglucose was obtained from [3 pent- 
acetyl glucose.? 
The same formula for 8 acetobromoglucose was independently 
arrived at by Koenigs and Knorr.’ 
They converted the body into tetracetyl-(3-methylglucoside, 
and thus proved that the bromine atom was at the end of the 
carbon chain. 
Again I have converted acetobromoglucose into carvacrylglu- 
coside, and it therefore follows that the glucose rest in the latter 
substance must have the formula 
CH.OH - CHOH -: ne Cee 5 ie 
Carvacrylglucoside, as mentioned above, is soluble in dilute 
alkali, and reprecipitated by addition of dilute acids or ammonium 
carbonate. 
The reprecipitated glucoside was found to be unchanged 
earvacrylglucoside, and its great solubility in dilute alkali was 
therefore not due to the decomposition of the glucoside by the 
action of the alkali, which fact was further confirmed by the non- 
reduction of Fehling’s solution even on continued boiling. 
It follows from the above facts that carvacrylglucoside contains 
a phenolic hydroxyl group, and that the carvacrol rest must have 
the formula :— 
- C,H, : CH; : 0,H, * OH. 
The formula for the glucoside must therefore be :— 
CH,OH : CHOH : CH: (CHOH), - CH - C,H, : CH; :C;H,0H, 
| O | 
no other formula agreeing with all the facts mentioned in this 
paper. 
1 Comptes Rendus, 1901. 1. p. 884. Ber. 34 (1901). p. 957. 
