[297] 'Fortsetzung,' 1763, s. 29; 'Dritte Fortsetzung,' s. 44, 96; 'Act. Acad. St. Petersburg,' 1782, part ii., p. 251; 'Nova Acta,' 1793, pp. 391, 394; 'Nova Acta,' 1795, pp. 316, 323.
[298] 'Die Bastardbefruchtung,' &c., 1865, s. 31, 41, 42.
[299] Max Wichura fully accepts this view ('Bastardbefruchtung,' s. 43), as does the Rev. M. J. Berkeley, in 'Journal of Hort. Soc.,' Jan. 1866, p. 70.
[300] 'Bastarderzeugung,' s. 394, 526, 528.
[301] Kölreuter,' Nova Acta,' 1795, p. 316.
[302] Gärtner, 'Bastarderzeugung,' s. 430.
[303] 'Botanische Zeitung,' Jan. 1864, s. 3.
[304] 'Monatsbericht Akad. Wissen,' Berlin, 1866, s. 372.
[305] International Hort. Congress, London, 1866.
[306] 'Proc. Bot. Soc. of Edinburgh,' May, 1863: these observations are given in abstract, and others are added, in the 'Journal of Proc. of Linn. Soc.,' vol. viii. Bot., 1864, p. 162.