Note 147 — SYSTEMATICS AND HISTORY
Reading edition
This would not be true, if the varieties of plants produced by Blaringhem, Klebs, and MacDougal by means of external agents were really “mutations” (comp. page 238, note 3).
Reading edition
This would not be true, if the varieties of plants produced by Blaringhem, Klebs, and MacDougal by means of external agents were really “mutations” (comp. page 238, note 3).