‘Origin of Species’, [263], [311] (see [Darwin]).
‘Osborne’, the (Royal yacht), marine animal seen from, [252], [254], [261].
[Oviparous], [56], [431], [433], [497] (see [gestation], [incubation], etc.).
[Ovoviviparous], [431], et seq., [505];
exceptional cases, [434], et seq., [449], [462], [505].
[Owen], Professor, F.R.S., etc., [22];
on the jaws, [32];
the Deirodon, [66], et seq.;
the tongue, [119];
the glottis, [131];