REFERENCES 
1. General Works of Reference. —For general facts and theories the 
following among others may be consulted :— 
Beddard, F. E.— Animal Coloration (London, 1892). 
Eimer, G. H. T. — Organic Evolution , as the Result of the Inherit¬ 
ance of Acquired Characters , according to the Laws of Organic Growth. 
Trans, by J. T. Cunningham (London, 1890). 
Geddes, P., and Thomson, J. A.— The Evolution of Sex (Con¬ 
temporary Science Series, London, 1889). 
Poulton, E. B.— The Colours of Animals (International Science 
Series, London, 1890). 
Wallace, A. R.— Darwinism (London, 1889). 
Reference should also, of course, be made to the works of Darwin, 
especially The Descent of Man , and Selection in Relation to Sex 
(London, 1871), and to the numerous books of travel which will be 
found cited in the above. 
2. Special Questions. 
Abel, J., and Davis, W.— “The Pigments of the Negro’s Skin 
and Hair,” Jour. Exper. Med. vol. i. No. 3 (1896), pp. 361-400 
1 pi. 
Agassiz, A.— The Cruise of the Blake , Bull. Museum Compar. 
Zool. Harvard College, U.S.A., 1888. Many Observations on Colours 
of Marine Organisms. 
Alcock, H.—“The Asteroidea of the Indian Marine Survey,” 
Ann. and Mag. Nat. Hist. vol. xi. (1893), pp. 73 ' I2I > 2 P ls - 
Colours of Deep-sea Forms. 
Andre, E.—“ Le Pigment melanique des Limnees,” Revue Suisse 
de Zool. iii. (1895), pp. 429 - 43 1 - . T , 
Bateson, W. — Materials for the Study of Variation , London, 
1894. Especially for Colour Variation, and for Colours of Pleuro- 
nectidm. ., 
Becquerel, Henri, et Brongniart, Charles —“ La matiere 
verte chez les Phyllies,” C. R. Ac. Sci. cxviii. No. 24 (1894), pp. 
1299-1303. 
