Galen: On the Natural Faculties by Galen
Chapter III
75 words | Chapter 24
The morphological factors suggested by Erasistratus are
quite inadequate to explain biological happenings.
Erasistratus inconsistent with his own statements. The
immanence of the _physis_ or nature; her shaping is not
merely external like that of a statuary, but involves
the entire substance. In genesis (embryogeny) the semen
is the active, and the menstrual blood the passive,
principle. Attractive, alterative, and formative
faculties of the semen. Embryogeny is naturally followed
by growth; these two functions distinguished.
Reading Tips
Use arrow keys to navigate
Press 'N' for next chapter
Press 'P' for previous chapter