XVII. Secretions in accordance with nature, by
the bowels, urine, sweat, sputum, mucus, womb,
through hemorrhoid, wart, leprosy, tumour, carcinoma,
from nostrils, lungs, bowels, seat, penis, in
accordance with nature or contrary to nature. The
peculiar differences in these things depend on
differences in the individual, on times and on
methods. All these things are one nature and not
one. All these things are many natures and one
XVIII. Purging upward or downward, neither
upward nor downward.
XIX. In nutriment purging excellent, in nutriment
purging bad ; bad or excellent according to
XX. Ulceration, burn-scab, blood, pus, lymph,
leprosy, scurf, dandruff, scurvy, white leprosy,
freckles, sometimes harm and sometimes help, and
sometimes neither harm nor help.
XXI. Nutriment not nutriment if it have not its
power. Not nutriment nutriment if it can nourish.
Nutriment in name, not in deed ; nutriment in deed,
not in name.
XXII. It travels from within to hair, nails, and to
the extreme surface ; from without nutriment travels
from the extreme surface to the innermost parts.