912 The American Naturalist. [October 
been made to brief or incidental references to interesting in- 
formation in this connection. 
Arthur, Earliness with unripe seed. Garden and Forest, iii 
(1890), p. 392. 
Arthur, Variations of plants from unripe seed. Proc. Ind. 
Acad. Sci., 1885-91, p. 14. Title only. 
Bailey, Products of mature and immature fruits. Bull. Cor- 
nell Exper. Sta., No. 45, 1892, p. 207. 
Cohn, Symbola ad seminis physiologiam. Inaug.-Diss., 1847, 
pp. 12-72, where many references to the older literature are to 
be found. 
Cohn, Beiträge zur Physiologie des Samens. Flora, xxxii 
(1849), pp. 481-512. 
DeCandolle, Phys. Vég., ii (1832), p. 662. 
Detmer, Vergleichende Physiologie des Keimungsprocesses, 
1880, pp. 537-538. i 
Fleischer, Beiträge zur Lehre von dem Keimen der Gewächse, 
1851, pp. 1-17. 
Goff, Report of the horticulturist. Rep. N. Y. Exper. Sta., ii 
(1883), p. 205 ; iii (1884), pp. 199, 211, 224, 232 ; iv (1885), pp. 
130, 182 , v (1886), pp. 174, 197. 
Goff, Influence of heredity upon vigor. Bot. Gaz., xii (1887), 
pp. 41-42. 
Goff, Earliness from .unripe seed. Garden and Forest, iii 
(1890), p. 427. 
Goff, A breeding experiment with tomatoes. Rep. Wis. 
Exper. Sta. viii (1891), pp. 152-159. 
Goodale, Vitality of seeds. Rep. Mass. Bd. Agric., xxvi 
(1878), pp. 268-269, 284-285. 
[Hunn], Tests with green and ripe seed of tomato. Bull. 
N. Y. Exper. Sta., No. 30 (1891), pp. 478-479. 
Keith, Of the conditions of germination, in reply to M. De- 
Candolle. Phil. Mag. viii (1836), pp. 491-495. 
Kurr, et al., Protocolle der botanischen Section der Versam- 
lung deutscher Aerzte und Naturforscher. Flora, xviii (1835), 
pp. 1-5; xix (1836), pp. 83-85. 
Lucanus, Ueber das Reifen und Nachreifen des Getreides. 
Landw. Ver.-Sta. iv (1860) pp. 147-166. 
