Note 31 — Chapter I
Reading edition
Among the various conjectures as to the cause of these verdant circles, some have ascribed them to lightning; others maintained that they are occasioned by ants. See Miss Baker’s “Northamptonshire Glossary,” vol. i. p. 218; Brand’s “Pop. Antiq.,” 1849, vol. ii. pp. 480-483; and also the “Phytologist,” 1862, pp. 236-238.