[35] Annals of Botany, 1904.
[36] Lilienfeld, Beihefte z. Botan. Centralblatt, Band XIV., abth 1, pp. 131-212. The facts were denied by Newcombe and Rhodes, Bot. Gazette, 36, 1904.
[37] If the growing part itself touches a stone it curves round the stone, not away from it—the reverse of the reaction at the tip!
[38] Pfeffer, l.c., p. 139.
[39] This weed is a cure for gout, and seems to have been called Bishopsweed because it was supposed that gout was a common ailment of bishops!
[40] By the classical researches of Rimbach.
[41] Scott Elliot and Fingland, Trans. Nat. Hist. Soc. Glasgow, vol. 5, New Series, part ii., 1897-8.
[42] See Rimbach's researches.
[43] Schimper, Pflanzengeographie. The account is based on the works of Pynaert, Sachs, Askenasy, etc.
[44] Kerner, Natural History of Plants (Blackie), vol. 1, p. 468.