Porpitae, bright colours of some.
Portax picta, dorsal crest and throat-tuft of; sexual differences of
colour in.
Portunus puber, pugnacity of.
Potamochoerus pencillatus, tusks and facial knobs of the.
Pouchet, G., the relation of instinct to intelligence; on the instincts
of ants; on the caves of Abou-Simbel; on the immunity of negroes from
yellow fever; change of colour in fishes.
Pouter pigeon, late development of the large crop in.
Powell, Dr., on stridulation.
Power, Dr., on the different colours of the sexes in a species of
Squilla.
Powys, Mr., on the habits of the chaffinch in Corfu.
Pre-eminence of man.
Preference for males by female birds; shewn by mammals, in pairing.
Prehensile organs.
Presbytis entellus, fighting of the male.
Preyer, Dr., on function of shell of ear; on supernumerary mammae in
women.
Prichard, on the difference of stature among the Polynesians; on the
connection between the breadth of the skull in the Mongolians and the
perfection of their senses; on the capacity of British skulls of
different ages; on the flattened heads of the Colombian savages; on
Siamese notions of beauty; on the beardlessness of the Siamese; on the
deformation of the head among American tribes and the natives of
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