Note 95 — Chapter IV
Reading edition
This notion of the sightlessness of the young swallow was a very popular one. The chelidonium, or swallow wort, according to Aristotle and Dioscorides was so called because the swallows use it to give sight to their young. Goldfinches, linnets, and other birds, in like manner were believed to use the eyebright; while the hawks strengthened their vision, we are told, by means of the plant that was hence called the hawkweed, and still retains that name.