Galen: On the Natural Faculties by Galen

Chapter VI

170 words  |  Chapter 27

The same holds with nutrition. Even if we grant that veins may obtain their nutrient blood by virtue of the _horror vacui_ (chap. i.), how could this explain the nutrition of nerves? Erasistratus's hypothesis of minute elemental nerves and vessels within the ordinary visible nerves simply throws the difficulty further back. And is Erasistratus's minute "simple" nerve susceptible of further analysis, as the Atomists would assume? If so, this is opposed to the conception of a constructive and artistic Nature which Erasistratus himself shares with Hippocrates and the writer. And if his minute nerve is really elementary and not further divisible, then it cannot, according to his own showing, contain a cavity; therefore the _horror vacui_ does not apply to it. And how could this principle apply to the restoration to its original bulk of a part which had become thin through disease, where more matter must become attached than runs away? A quotation from Erasistratus shows that he did acknowledge an "attraction," although not exactly in the Hippocratic sense.