Notes on the chemical reactions of brucia / by T. G. Wormley.

  • Wormley, Theodore George.
Date:
1859
Catalogue details

Licence: Public Domain Mark

Credit: Notes on the chemical reactions of brucia / by T. G. Wormley. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

    1/6
    t. c%„ ^ Of <* N O T E S f fHYSlCJAN* c# OX SOME OF THE * 1? CHEMICAL REACTIONS OF BRUCIA. BY T. a. WORMLEY, M.D. In1 the following experiments, pure crystallized brucia was dis- \ solved in pure water, when necessary, by the aid of just sufficient acetic acid. No deduction was made for the water of crystalliza- tion in the alkaloid. A small drop of a saturated solution of the reagent was applied to a grain of the brucia solution, placed on a glass slide. The amount of brucia operated upon will frequently be stated in the form of a fraction, it being understood to imply the fractional part of a grain of brucia, in one grain of water. I 1. Potash. 1. y^th, grain of brucia, gives, with a solution of potash, an immediate white amorphous precipitate, which very soon becomes a crystalline mass. The ppt. is readily soluble in acetic acid, and in deficiency of the reagent, but not readily soluble in large excess. 2. yjyth, gives an immediate cloudiness, which is soon crystal- line, but not abundant. The ppt. is increased by rubbing the drop with a glass rod. 2. Ammonia. 1. r^ofib gives no immediate ppt., but very soon crystals begin to form, which in a few minutes are very abundant. If the solution 9 be rubbed, granules and crystals appear immediately. The ppt. is prevented by large excess of ammonia, but when formed, it is not readily dissolved by excess.