_Take spirit of wine rectified one quart, distilled oil of rosemary one
drachm, camphor one ounce, castile soap half a pound; cut the soap
small, and let the whole be mixed and dissolved._
This is an excellent external medicine for sprains, rheumatism, bruises,
&c. This medicine is commonly called opideldock, and in all such cases
is far superior to the spirit of camphor singly; unless where the
constitution is sluggish, and requires a greater stimulus; in general,
however, this excellent composition will supply the place of both.[10]
Footnote 10:
Since these compositions are so easily made, they might occasionally
be prepared on board; Instead thereof, I would advise the seaman to
furnish the box with camphor and soap; and instead of rectified
spirit, good rum or brandy will answer equally as well.
C. _Sweet oil_: This ought to be pure and good; it is of many uses in
medicine, which I shall treat of as occasion requires.