240 LEPIDODENDREAE. 



which I possess, and in those which I had the opportunity of examining in 

 Mr. Cash's collection, but they appeared to me to be connected together 

 and to form an internal and tolerably voluminous cell-structure, which we 

 should be inclined to compare with the inner cell-complex in the pollen of 

 Gymnosperms and Cordaiteae, and with the early tissue-formation in the 

 microspores of Selaginella. We cannot at present say anything further 

 or more definite respecting this apparently rare fossil ; we must await the 

 discovery of other and better specimens. 



