2. They must not possess too great a specific gravity.

3. They must not render the liquid too mucilaginous or thick;

_thus_, f℥j _should seldom contain more than_ ʒss _of a

vegetable powder_, ℈ij _of an electuary_, _and conserve_; _or_

grs. xv, _or_ ℈j _of an extract_.

III. The taste, the smell, and the general aspect of the mixture

should be rendered as pleasant as possible; _thus milk covers the

taste of bark, of the tinctures of guaiacum and valerian, and that

of lime water_; _and a light decoction of the liquorice root

disguises a bitter taste more effectually than sugar_.

The Physician may also produce occasional changes in the

appearance of his mixture, in order to reconcile a delicate taste

to its continuance; he never ought however to alter the essential

part of plans which he finds advantageous.

A DRAUGHT differs merely from a mixture in quantity; it is usually taken

at once, and should not exceed f℥iss; it should be always preferred

when,

Pharmacologia Fourth American, from the Seventh London Edition · 第 143 / 782 题