358 Dlller — Klamath Mountain Section, California. 



is fresh water aquatic, growing in shallow water, its roots 

 anchored in the mud and its numerous leaves forming a rosette 

 on the surface of the water. It is difficult to understand how so 

 many of the fruits could have been preserved without a trace of 

 a leaf. 



I have described two species of Trapa from the lake beds of 

 the Payette formation of Boise County, Idaho, one of which 

 [T. occ'identalis), 18th Ann. Rept. U. S. G. S., Pt. Ill, pi. cii, fig. 

 7 b , is of the same type apparently as certain of the fruits from 

 Trinity County, Cal. They are probably not identical, although 

 so far as 1 can see the difference is mainly one of size. 



"No. 6170. Hay Fork Creek, opposite Van Metres, two and 

 one-quarter miles west of the town of Hay Fork. 



This material is a soft, bluish or greenish clay and has the 

 fossil plants well preserved. I find the following species : 



Sequoia angustifolia Lesq. 

 Salix angusta? Al. Br. 

 Salix Calif ornica Lesq. 

 Quercus convexa Lesq. 

 Quercus elmnoides Lesq. " 

 Ficus ungeri? Lesq. 

 Aralia whitneyi Lesq. 



These are all more or less well known Auriferous Gravels 

 species except Ficus ungeri, which is doubtfully identified here. 

 It is normally a Green River species, and it will probably be 

 found that the Hay Fork leaves are similar to but not quite iden- 

 tical with it. The identification of Salix angusta is also some- 

 what doubtful. That the flora we are here considering is similar 

 in age to the Auriferous Gravels is clear, but in the light of more 

 recent work it is perhaps desirable to attempt to fix, if possible, 

 the part of the Auriferous Gravels they most resemble. Of the 

 four species clearly identified, typically Auriferous Gravels (Salix 

 Calif ornica, Quercus convexa, Quercus elmnoides and Aralia 

 whitneyi), three are found at Table Mountain and one at Chalk 

 Bluffs. 



Turner is of the opinion that the Table Mountain locality is of 

 later age than the Auriferous Gravels proper, while Lindgren 

 regards it as pretty definite!}' settled that Chalk Bluffs is similar 

 in age to Iowa Hill and Independence Hill, that is of the age of 

 the bench gravels or lowest rhyolitic tuffs. He regards them as 

 upper Miocene and I see no reason to question this. 



From this meagre evidence it appears that the Trinity County 

 leaves under consideration are most like those from Table Moun- 

 tain, but this whole subject must await a thorough revision of 

 the material and available data before any thoroughly satisfactory 

 or reliable conclusions can be reached. I have a large amount of 

 material from various localities and as soon as possible it is my 

 intention to work it up with a view to fixing the horizons and 

 whence it came, but until that is done I can hardly venture more 



