116 



DISTRIBUTION OF THE TRANQUILLE RIVER F'LORA—Concltidcd. 



An inspection of the distribution shown in the above table conveys the information that 

 there are 



Eocene, chiefly Lignite Tertiary 

 Oligocene, — 



Upper Eocene 



Lower Miocene 

 Miocene 



14 



14 

 4 



15 



thus giving a preponderance of the Eocene over the Miocene, in the proportion of 28 to 

 19 ; but inasmuch as the Eocene and the Miocene are practically equal, while there are 18 

 Oligocene, the conclusion appears justified, to the effect that these beds are of Oligocene age, 

 and possibly not higher than Upper Eocene, though the presence of such strong Miocene 

 types as Ficus asimincefotia, Pinus truncuJus and Sequoia brevifolia would seem to give them 

 a stronger Miocene tendency. I therefore assign them to the Lower Miocene provisionally. 



STUMP LAKE. 



Stump lake is one of the localities about which very little information has as yet been 

 obtained. The known flora contains only eight genera and species. 



