heory of Horticulture,' p. 175-179; Godron, 'De l'Espece,'
tom. i. p. 106: Pickering, 'Races of Man;' Gallesio, 'Teoria della
Riproduzione,' 1816, p. 101-110. Meyen ('Reise um Erde,' Th. ii. s. 214)
states that at Manilla one variety of the banana is full of seeds; and
Chamisso (Hooker's 'Bot. Misc.,' vol. i. p. 310) describes a variety of the
bread-fruit in the Mariana Islands with small fruit, containing seeds which
are frequently perfect. Burnes, in his 'Travels in Bokhara,' remarks on the
pomegranate seeding in Mazenderan, as a remarkable peculiarity.

[423] Ingledew, in 'Transact. of Agricult. and Hort. Soc. of India,' vol.
ii.

[424] 'De la Fecondation,' 1862, p. 308.

[425] Hooker's 'Bot. Misc.,' vol. i. p. 99; Gallesio, 'Teoria della
Riproduzione,' p. 110.

[426] 'Transact. Linn. Soc.,' vol. xvii. p. 563.

[427] Godron, 'De l'Espece,' tom. ii. p. 106; Herbert on Crocus, in
'Journal of Hort. Soc.,' vol. i., 1846, p. 254.--Dr. Wight, from what he
has seen in India, believes in this view; 'Madras Journal of Lit. and
Science,' vol. iv., 1836, p. 61.

[428] Wahlenberg specifies eight species in this state on the Lapland Alps:
_see_ Appendix to Linnaeus' 'Tour in Lapland,' translated by Sir J. E.
Smith, vol. ii. pp. 274-280.

[429] 'Travels in North America,' Eng. translat., vol. iii. p. 175.

[430] With respect to the ivy and Acorus, _see_ Dr. Bromfield in the
'Phytologist,' vol. iii. p. 376. _See_ also Lindley and Vaucher on the
Acorus.

[431] 'Annal. des Sc. Nat.,' 3rd series, Zool., tom. iv. p. 280. Prof.
Decaisne refers also to analogous cases with mosses and lichens near Paris.

[432] Mr. Tuckerman, in Silliman's 'American Journal of Science,' vol. xlv.
p. 41.

[433] Sir J. E. Smith, 'English Flora,' vol. i. p. 339.

[434] G. Planchon, 'Flora de Montpellier,' 1864, p. 20.

[435] 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, 'Geograph. Bot. de l'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. On the
non-production of pollen by this Ranunculus _see_ Chatin, in 'Comptes
Rendus,' June 11th, 1866.

[436] 'Bastarderzeugung,' s. 565. Koelreuter ('Dritte Fortsetzung,' s. 73,
87, 119) also shows that when two species, one single and the other double,
are crossed, the hybr