Chap. I.

Sulphur.

307

genizing remedy. It has only been used in diabetes, by DrRollo and others, under the name of Hepatized ammonia, indoses of five or ten drops twice or thrice a-day.

AgUA SUXPHURETI AMMONIA. Dllb.

Water of Sutphuret of Ammonia.

Take of

Fresh burnt lime,

Muriate of ammonia in powder, each four ounces;

Sublimed sulphur,

W.u-m water each two ounces, by weight.

Spr:i;kle the water upon the lime, placed in an earthen vessel,and cover it up until the lime falls to powder, which, as soonas it is cold, is to be mixed by trituration with the sulphurand muriate o( ammonia. Put the mixture into a retort,and distil with a sudden and sufficiently strong degree ofheat. Keep the liquor thus obtained in a phial, accuratelyclosed with a glass stopper.

The second process of the Dublin college is totally diffe-rent. The ammonia and sulphuretted hydrogen are present-ed to each other in a nascent state, and with the undecom-posed part of the water pass over into the receiver, while, inthe retort, the lime remains combined with sulphuric andmuriatic acid.

The hydro-sulpburet of ammonia was formerly called thefuming liquor of Boyle. It is of a dark red colour, and is ex-tremely fetid. It differs from the hydro-sulphuret of ammonia,prepared by the preceding process, in containing a portionof uncombined alkali, to which, according to Berthollet, itsproperty of emitting fumes is owing, and in the last portionswhich come over being in the state of a hydroguretted sul-phuret. It soon, however, is converted into a hydro sulphu-ret, by losing its excess of ammonia and sulphur. It is de-composed by all acids, and almost all metallic solutions.

CHAP. II.—ACIDS.

ACIDUM SULPHURICUM DILUTUM. Ed.

Diluted Sulphuric Acid,Take ofSulphuric acid, one part;