Note 9 — Chapter VIII · MODIFIED CIRCUMNUTATION: MOVEMENTS EXCITED BY LIGHT.
Reading edition
Pfeffer gives the names and dates of several ancient writers in his ‘Die Periodischen Bewegungen,’ 1875, p. 62.
Reading edition
Pfeffer gives the names and dates of several ancient writers in his ‘Die Periodischen Bewegungen,’ 1875, p. 62.