334 Extracts from Mr. Bentham’s Address. 
and that all direct evidence adduced in their favor has broken 
down upon cross-examination. And however much _ these 
Eocene leaves may assume a general character, which may be 
gists seem to suppose. ‘‘ Every vegetable species,” as well ob- 
totally annihilated and forever concealed from us. The fact 
that Pinus Alves existed in Spitsbergen in Miocene times, and that 
no trace of it has been found in the abundant Tertiary remains 
