four drachms to one ounce; of the _compound
tincture_, from one to four drachms; of the _extract_, from six to ten
grains; of the _compound decoction_, from four drachms to two ounces.

[TO-DAY, HE FLOATS ON HONOUR'S LOFTY WAVE.]

744. Cream of Tartar

Cream of Tartar is a purgative and refrigerant.

It is _used internally_ in dropsy, especially of the belly, in doses
of from one scruple to one drachm. As a refrigerant drink it is
dissolved in hot water, and sweetened with sugar, and is used in
febrile diseases, care being taken not to allow it to rest too much
upon the bowels.

_Dose_, as a _purgative_, from two to four drachms, as a _hydrogogue_,
from four to six drachms, mixed with honey or treacle.

_Caution._--Its use should be followed by tonics, especially gentian
and angostura.

745. Scammony

Scammony is a drastic purgative, generally acting quickly and
powerfully; sometimes producing nausea, and even vomiting, and being
very apt to gripe.

It is _used internally_, to produce watery evacuations in dropsy, to
remove intestinal worms, and correct the slimy motions of children.

_Dose_, of the _powder_, from five to sixteen grains, given in
liquorice water, treacle, or honey; of the _confection_, from twenty
to thirty grains.

_Caution._--Do not give it in an irritable or inflamed state of the
bowels.

746. Epsom Salts

Epsom Salts is a purgative and diuretic. This medicine generally
operates quickly, and therefore is extremely useful in acute diseases.
It is found to be beneficial in dyspepsia when combined with infusion
of gentian and a little ginger. It forms an excellent enema with olive
oil.

_Dose_, from a half to two ounces, dissolved in warm tea or water.
Infusion of roses partially covers its taste and assists its action.

_Note_, that with regard to Epsom salts, the _larger in reason_ is the
amount of water in which they are taken, the _smaller_ the dose of
salts required: thus, half an ounce properly dissolved may be made a
strong dose. The action and efficacy of Epsom salts may be greatly
increased by adding one grain of tartar emetic to a dose of salts.

747. Glauber's Salt

Glauber's Salt is a very good purgative.

_Dose_, from a half to two ounces, dissolved in warm water.

748. Sulphate of Potash

Sulphate of Potash is a cathartic and deobstruent. It is _used