[32] Genesis corresponds to the intrauterine life, or what we may call embryogeny. Alteration here means histogenesis or tissue-production; shaping or moulding (in Greek diaplasis) means the ordering of these tissues into organs (organogenesis).
[34] Note inadequate analogy of semen with fertilised seeds of plants (i.e. of gamete with zygote). Strictly speaking, of course, semen corresponds to pollen. cf. p. 130, [note 2].
[35] i.e. the four primary qualities; cf. chap. [iii]. supra.
[36] Various secondary or derivative differences in the tissues. Note pre-eminence of sense of touch.
[37] De Anima, ii. et seq.
[38] Lit. homoeomerous = of similar parts throughout, “the same all through.” He refers to the elementary tissues, conceived as not being susceptible of further analysis.
[39] That is, by the bodily eye, and not by the mind’s eye. The observer is here called an autoptes or “eye-witness.” Our medical term autopsy thus means literally a persona inspection of internal parts, ordinarily hidden.
[40] i.e. “alteration” is the earlier of the two stages which constitute embryogeny or “genesis.” cf. p. 18, [note 1].
[41] The terms Galen actually uses are: ostopoietic, neuropoietic, chondropoietic.