_Measure of Fluids._
1 gal. measure (cong.) contains 8 pints,
1 pint (O.) 16 ounces,
1 ounce (f. ℥.) 8 drams,
1 dram (f. ʒ.) 60 minims, (_m._)
_Weights of Dry Substances._
1 pound (lb.) contains 12 ounces,
1 ounce (℥.) 8 drams,
1 dram (ʒ.) 60 grains, (gr.)
1 scruple (℈.) 20 grains, or 1-3d of a dram.
It is customary to distinguish quantities of fluid from dry substances,
by prefixing the letter f. (fluid) when an ounce or dram is mentioned
in medical works, as may be seen in the first of these tables.
The following table of the gradations of doses of medicines for
_different ages_, will in general be found pretty correct, and ought
never to be deviated from, except by professional advice.
If at the age of _maturity_ the dose be _one dram_, the proportion will
be at
From 14 to 21 years, 2 scruples,
7 14 half a dram,
4 7 1 scruple,
4 15 grains,
3 half a scruple,
2 8 grains,
1 5 grains,
6 months 3 grains,
3 2 grains,
1 1 grain.