——, on relations of ruminants and pachyderms, [329].
——, on fossil birds of New Zealand, [339].
——, on succession of types, [339].
——, on affinities of the dugong, [414].
——, on homologous organs, [434].
——, on the metamorphosis of cephalopods and spiders, [442].
P.
Pacific Ocean, faunas of, [348].
Paley on no organ formed to give pain, [201].
Pallas on the fertility of the wild stocks of domestic animals, [254].