CONTENTS. TU 



PACK 



Great number of distinet Floras 152 



Supposed Formation of New Species, as upheld by Professor 



Owen, &.c^ inadmissible 15-t 



Opinions of Professor Pictet on Peculiarity of Species in each 



formation 155 



Time the true key to difficulties arising from apparent per- 

 manency of species : 158 



Vast spaces of time iuTolved in the geological record . . . .159 

 Zoologj- of Galapagos Islands, an instance of comparatively re- 

 cent development 161 



Author's theory supported by facts connected with the distri- 

 bution of plants 165 



Whence the first impulse to vitality ? . , . 168 



\J The Vestiges — its_2Jjjectpurelyscieniific — defended on this 



ground .' 169 



Ungenerous policy of Geological Objectors 170 



Opposition of the Scientific Class 174 



Estimate of this Opposition 175 



v; Utility of Hypotheses ] 79 



(/ Bearing of the new doctrine on Human Interests 182 



Its Moral Results 184 



w Consolations and Encouragements offered by it 187 



Appebdix — Letters of Blr. Weekes on Aboriginal Production of 



Insects 189 



