[127] Mul. 1.77 (L) 8.170.14ff. Cf., among many other texts where weights or liquid measures are specified, Mul. 1.74 (L) 8.156.15ff., 1.75 (L) 8.164.7ff., 168.7ff., 1.77 (L) 8.170.9f., 1.78 (L) 8.176.3ff., 18ff., Mul. 2.119 (L) 8.258.23ff., 260.2ff., 2.172 (L) 8.352.19ff. From outside the gynaecological works similar prescriptions that specify weights or measures appear, for example, at Morb. 3.17, CMG 1.2.3.96.19ff., 22ff., 27ff., 98.2f., 9ff.; Salubr. 5 (Nat.Hom. 20), CMG 1.1.3.212.16ff.; Int. 23 (L) 7.226.13ff., 26 (L) 7.234.15ff., 31 (L) 7.248.9ff.; cf. 20 (L) 7.216.22f., which specifies that there should be a measure ( 
) for each of the ingredients in a particular prescription for a clyster, though the text had just referred to taking an amount of one ingredient "as big as a sheep's knucklebone."
Later pharmacologists too exhibit a similar general pattern, of the common, but far from invariable, specification of weights and measures. They are indicated far more often than not in, for example, Celsus Med. 5.18–25, CML 1.194.31–215.3, though less systematically in, for instance, Dioscorides De materia medica (but see 4.69 [2.228.2ff. Wellmann], 72 [2.231.3ff. W.], 73 [2.232.12ff. W.], 75 [2.235.10ff. W.]). Galen sometimes demands that pharmacology should be mastered "exactly," 
, for example at (K) 10.180.9ff., though he often acknowledges the element of conjecture, e.g., (K) 10.209.4ff., CMG 5.9.1.197.6ff., (K) 15.585.6ff., putting it at (K) 11.285.10ff. (cf. 293.13ff., 294.12f.) that nothing shows so clearly that medicine is in prac-tice a matter of guesswork as the question of the quantity of each remedy. Sextus too, in his account of the seventh sceptical mode, on quantities, P. 1.129ff., suggests at P. 1.133 that the mixture of compound drugs must be exact, 
, and that a slight oversight in weighing in their preparation can make them harmful and poisonous; elsewhere, at M. 7.35ff., in his attack on the notion of the "criterion," he uses weighing to illustrate the threefold distinction among (1) the agent, (2) the means, and (3) the application of the means.