℞ (Lat. Recipe), take; āā, of each; ℔, pound; ℥, ounce; ʒ, drachm; ℈,
scruple; ♏, minim, or drop; O or o, pint; f℥, fluid ounce; fʒ, fluid
drachm; as, ℥ss, half an ounce; ℥i, one ounce; ℥iss, one ounce and a
half; ℥ij, two ounces; gr. grain; Q. S., as much as sufficient; Ft.
Mist., let a mixture be made; Ft. Haust., let a draught be made; Ad.,
add to; Ad lib., at pleasure; Aq., water; M., mix; Mac., macerate;
Pulv., powder; Pil., pill; Solv., dissolve; St., let it stand; Sum., to
be taken; D., dose; Dil., dilute; Filt., filter; Lot., a wash; Garg., a
gargle; Hor. Decub., at bed time; Inject., injection; Gtt., drops; ss,
one-half; Ess., essence.