The Action of Plants on a Photographic Plate in the Dark . Russell, Roy. Soc. Proc, B. vol. 78, Plate 21.

---

Size: 1636px × 1528px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1900, bookidphiltrans062, bookyear1906