at Prof. Owen on Life and Species. 
The series of observations on the Ungulate group of Mam- | 
mals yields —— as above explained, into the mode of ope-— 
ration of the secondary law ; and gives evidence of the amount 
cording to the analogy of the mammalian Hipparion and © 
Equus, we may expect the ecmesposding precedent form of the - 
Papuan of the well-wooded and richly fruited islands repre-— 
senting a departed tropical or subtropical continent, to be ex- 7 
emplified by fossils in formations not earlier than middle ter | 
iary. All species coéxisting with the actual specific form 
Homo will, with him, be immutable, or mutable only as he may 
be. To name such species, after comparing and determining — 
their specific characters, will continue to be the Zoologist’s sta- _ 
ple task as long as his own specific intellectual character re-_ 
mains unchanged (Pref., p. xxxv1). To suppose that coéxist- 
ing differentiations and specializations, such as Hquus an 
Rhinoceros, or either of these and Tapirus, which have di-— 
verged to generic distinctions from an antecedent common form 
to be transmutable one into another, would be as unscientifie, 
not to say absurd, as the idea, which has been bolstered up by 
80 > any ir uestionable illustrations, and —— —_ poor ‘ work- : 
“la 
ee 
remotel y and bassin repeated acts of direct sonics fe 
is Se cohcnniitantly led to suppose the successive going out of such 
species to have been as miraculous as their coming in. The 
destruction of one creation is the logical preordinance to @ 
currence of ‘genesis.’ This nexus of ideas was too close not to 
have swayed with Cuvier : accordingly, in his famous ‘ Discours 
sur les Révolutions de la Surface du Globe,’ we have a section 
of ‘ Preuves que ces Révolutions ont été nombreuses,’* and an- 
other section of & oe ue ces Révolutions ont été subites 
ew peae oe ocece 
