152 Scientific Inielligence. 
lished, will dain as substantial results after these theories have 
been exploded. ” “Exploded” is hardly the proper term (except 
as suggestive of the “ engineer hoist with his own petard,”) for a 
process in which the doctrine of the derivation of species has all 
hod of confutation is more effec tual than original. It was 
oes gobi by Sir John Harrington in the 16th century; when 
he Pos 
“Treason doth never prosper, what’s 2d hime ? 
” tale if it —— none dare call it t 
stra ae 
“Physically the change from the eecnes to the Tertiary 
was one of continental elevation—dryin the oceanic waters in 
which the ma arine animals of the Cretaceous lived, oy git 
must have happened that the marine Cretaceous aeheda aide 
red first from the high lands and lingered longest in the val- 
e 
tions of the land are mixed with more antique inhabitants of the 
sea; while on the contrary in times of subsidence older land 
creatures are i iable to be mixed with newer products of the sea. 
us in Vancouver's Island saa which Heer at first regarded 
as Miocene have been washed down into waters in which Cretace- 
ous Enel ahes still swarmed. _Thus Cope maintains that the 
_ Lesquereux regards as Eocene. At first these eee 
ronisms seem puzzling, and they interfere much with arbit itrary 
cliaoificatiguk Still they are perfectly natural, and to be expected 
where a true geological transition occurs. They affor d, moreover, 
an opportunity of settling the question whether the introduction 
