62 APPENDIX. 



like a counterpart o\' the fragment figured by the French author, who refers it to u group of Maples, which 

 includes among others .1. cocdneum, Michx. 



The conclusions to be derived from the determination of these few fossil species fully coincide with what 

 has been exposed by the table indicating the relation of the plants described in the report on the Mora of 

 the auriferous gravel deposits. The group is Miocene bj one species of Acer and one of Querelas, while 

 it has of each of these genera one speeies living at the present epoch. It has also an Acer positively 

 identified. with a species of the Gypses of Aix. Its relation therefore to the Miocene flora is more dis- 

 tinctly marked than to the flora of the present period. It has two Atlantic types, not present now in the 

 Pacific slope, and two exclusively California!! ones, represented now by one species of wide distribution, 

 Querent chrysolepis, and by another probably modified by local influence, an .-lee? - , intermediate between 

 Acer macrophyllum and .1. grandidentatum. 



The relation to the Pliocene of Europe rests as it was formerly indicated, on the analogy, not identity 

 of one species only. 



