Nae 
oe AR © Dugtionte He Sabbetinente: The aeey of Eoiiniert are a 
ous, and there is continual danger of the loss of specimens up to 
time of maturity. Errors of observation, and the liability of s 
observed change being due to other causes, are also greatly less 
a the multiplicity of Sere, ; 
Sis ane 
REFERENCES. 
” 
{The numbers correspond with those in the foregoing pages.] - 
- 1, 2, 3. American Pomological Society, Proceedings of, ‘‘ Effect of Pollen on 
_ Fruit, » 1883, p. 38; ‘‘ The Infiuence of Pollen on the Form, Size, Color and Flay 
~ of the Fruit, ha 1885, p 66; 1887, a 21. 
4, Bailey, L. H., ’ Notes on rossing and Hybridizing,” Bull. 31, Mich. Ag.. Ou 
90 rs 
Tn Nate SK ea Crozier, A. A., ‘‘ Immediate Influence of Pollen,” Ag. Seleutes vol. 1; 
85, 227; “Influence of Cross-fertilization on the Fruit,” Proc. Am. Pomol eat 
Society, 1887, p. 21; ‘‘Some Crosses in Corn,” Proc. Society for the Promotion of - 
Ag. Science, 1887, p. 91. 
8. Darwin, Charles, ‘ *On the Direct or Immediate Action of the Male ey 
on the Mother Form,’ Animals and Plants under Domestication vol. i, p 
9. Garfield, C. W., ‘‘ Influence of Pollen,” Report Michigan Hort. Societe 1884, 
. 246, een a 
10, 11, 12. Gray, Asa, ‘‘ Naudin’s Researches into the Specific Characters and the vie 
- Varieties of the Genus Cucurbita,” Journal of Sciences, adi ser. . vol. 24, p. 440; “Action ae 
of Foreign Pollen upon the Fruit,” ib., vol. 25, p. "422, Hybridation in Mosses Aae 
Affecting the Sporangium, etc., of the Female Parent,” Be 3d ser., vol. 6, p. 390. 
3.14. Gentry, Ls, Gi ‘ The Fertilization of Certain Flowers through | Insect 
Agency,” Am. Naturalist, vol. 9, p. 268; review of same by Thomas Meehan, tb. 
O74. ' 
sf ee 15. Halsted, B. D., ‘‘ Cross-fertilization of Fruits,” a Towa Ag. College, Bot. 
ow i” \ Dept.,1886, p. 37. 
5 ae 16. ‘Lazenby, W. R., ‘‘ Influence of Groastendlioa ain upon the Development ie pi 
> _ the Strawberry,” Pr oc. Am. Association for the Advancement of Science, "Oh 3) DA “% 
~ 499. 
Rog : i Ufo 18, 19, 20, 21,22. Meehan, Thomas, ‘‘On the Immediate Action of Pollen on. 
SOM grant a Rural New Yorker, 1885, June 13 and 20; ‘‘ Immediate Influence of Pollen 
at We), SOL Fruit,” Proc, Acad. Nat. Se. Phila., 1884, p. 297 ; Gardener’s Monthly, 1885, Pp. 
gua: 86, 116, 150, 341. 
83,24. New York Experiment Station Report, ‘Influence of Different Pollens — 
Eoael upon the Character of the Straw berry,” 1885, p.255 ; *‘ Influence of Foreign Ba 4 Ns 
“4 upon the Character of Fruit,” 1886, p. 179. rm 
25. Skeels, F.E., ‘‘ Cross-fertilization of Cucurbits,” Ag. Science, vol. 1, P- 228... 
i ‘ 
ies SECONDARY RESULTS OF POLLINATION. 
Vt 
Pee By E, W. CLAYPOLE, Akron, Ohio. i 
[The following paper was read before the Botanical Club of the American ASSO- 
eh ciation for the Advancement of Science at the New York meeting, August, 1881. - 
chee It has not heretofore been published, and has been secured for this report mainly for 
its bearing on the topic of the preceding paper. | 
The functions of the pollen and of the ovule, respectively, in the — ze 
production of seed are so well established by observation that there a 
is no occasion to say anything in explanation. The growth of the 
pollen tube and its elon cation and penetration of the conductive tis-" 
sue of the style may be seen in certain flowers by any tyro of the mi- 
noe croscope. The passage of the fovilla, or fertilizing material, down 
3 _the pollen tube to the micropyle, its entrance, and its union with the — 
we protoplastic material of the ovule, are fundamental truths in vegeta- 
ble physiology, though our faith in most cases rests rather on testi-  - 
