Note 117 — Chapter XVIII · ON THE ADVANTAGES AND DISADVANTAGES OF CHANGED CONDITIONS OF LIFE: STERILITY FROM VARIOUS CAUSES.
Reading edition
On the non-production of seeds in England, see Mr. Crocker, in ‘Gardener’s Weekly Magazine,’ 1852, p. 70; Vaucher, ‘Hist. Phys. Plantes d’Europe,’ tom. i. p. 33; Lecoq, ‘Géograph. Bot. d’Europe,’ tom. iv. p. 466; Dr. D. Clos, in ‘Annal. des Sc. Nat.,’ 3rd series, Bot., tom. xvii. 1852, p. 129: this latter author refers to other analogous cases. See more especially on this plant and on other allied cases Prof. Caspary, “Die Nuphar,” ‘Abhand. Naturw. Gesellsch. zu Halle,’ B. xi. 1870, p. 40, 78.