TRANSACTIONS OF SECTION D. 595 
(in this exhibit were also included, as being of interest to entomologists in 
general, some of the most striking aberrations Mr. Raynor has reared of this 
extremely variable species.) 
8. Haperiments on Heredity in Web-footed Pigeon. By R. Stapuxs- 
Browne. 
Cross made.—Web-footed pigeon ¢ x Nun @. 
Characters.—1. Foot character.—The membrane between the digits is extended 
as far as the toe-nails. This character appears suddenly in a strain of pigeons, 
birds possessing it being bred from parents with perfectly normal feet. 
2. Head character.— Shell.’ <A tuft of reversed feathers at the back of the 
head, forming the ‘shell.’ This character has been bred true in the ‘Nun’ pigeon 
for many generations. 
Results of Crossing. 
| Foot Character | Head Character 
uo} SS eS 
ge Va a Da 
— | Description of Experiment > [oe Ey Ry ae Aes 
/ 3 | o OF aS 2 aS 
Sill 8) | ela Elam 
| "E(w ay Acne ah Beet ie 
| [A o) a att ha here 
I, 1902. Web-footed ¢ x Nun F ; ‘ 6 0 6 6| 0 6 
lf. | 1908. Crossbreds of first generation mated 
together . : j - é Nl alee Sole Dat woe ee | tae 
Til. | (a) 1903. Second pair of ditto : : eft Lot leo RF eM Yl i 2 0 PS 
(8) 1904. (Same pair) __,, wt Waldext aS D ae Copel | 4 
IV. | 1903. Web-footed g x crossbred ? first gene- 
ration - ‘ 3 : SO) Ae Ba Bre Ol PS 
V. | 1904. Same gx second ? of same breeding | 7| 4] 3] 7/ 0} 7 
VI. | 1904. Extracted webbed birds from IV. oie ee Aner Geode FO 
-VII. | 1904. Another pair of same breeding . “i 6 Dal) DPN OL be One 5 
VIII. | 1904. Extracted ‘shell’ birds from II. and ITI. DieeO) | Sb leva. (bil) 0: 
The web-footed character appears on hatching, the ‘shell’ on feathering. The 
experiments were started in 1902, and include birds hatched up to July 16, 1904. 
9. Fowls and Sweet Peas. By W. Batsson, F.R.S. 
10. Report on the Occupation of a Table at the Zoological Station, Naples. 
See Reports, p. 300. 
11. Report on the ‘ Index Animaliwm.’—See Reports, p. 297. 
12. Report on the Influence of Salt and other Solutions on the Develop- 
ment of the Hrog.—See Reports, p. 288. 
13. Report on the Colour Physiology of Higher Crustacea. 
See Reports, p. 299. t 
14. Report on the Coral Reefs of the Indian Ocean.—See Reports, p. 298. 
QQ2 
