Prep. 1. (Ph. L.)—a. 2 galls, of water are put into the still along with the vegetable matter (bruised, if necessary), but only 1 gall. is drawn over. In the Ph. L. 1836, 7 fl. oz. of proof spirit were added before distillation.
b. Take of the essential oil of the plant, 2 fl. dr.; powdered silex, 2 dr.; triturate them diligently together, and then with distilled water, 1 gall., gradually added; lastly (after briskly agitating the whole for some time), strain the solution.
2. (Ph. E.) As 1, a, but adding of rectified spirit, 3 fl. oz., before distillation.
3. (Ph. D.). From the respective essences (Ph. D), 1 fl. oz.; distilled water, 2 quarts; agitated well together, and then filtered through paper.
The following are the Aquæ destillatæ of the British Colleges, with some others, the quantities referring to a product of 1 gall., to
be prepared as above when not otherwise directed.
Angelica Water; Aqua angelicæ (P. Cod.). Bruised seed, 1 lb.; water, q. s., distil 4 lbs.
Aniseed Water; Aqua anisi (P. Cod.). From seeds, as Aqua angelicæ.
Balm Water; Aqua melissæ (P. Cod.), L. Fresh tops, 12 lbs.
Bergamot Water; Aqua bergamii (L. 1746). Bergamot peel, 5 oz.