ISO 



University of California Publications. 



[Geolqgy 



is found in the typical Loup Fork, as well as in the lower series 

 (see Osborn, Bull. Mus. Comp. Zool. Cambridge, Vol. 16, p. 89. 

 under the title Anchitheriicm parvulum). No great weight 

 therefore, can be attached to the occurrence of the genus in the 

 Cottonwood Creek beds. The presence of Blastomeryx borealis 

 would, of itself, be insufficient for the correlation of the two 

 localities, but the identification of the species is not at all certain. 

 Besides certain minor differences in the teeth, the limb bones 

 from the Oregon beds indicate the existence there of two species, 

 both of which are much heavier than the Montana forms and 

 are more like others from the Loup Fork of Kansas." 



In the same paper 22 the lower strata in the valley of Deep 

 River are referred to the top of the John Day. 



Certain "deposits of gravel, clay and volcanic dust,, lying 

 above the lavas of the Columbia River in eastern Washington 

 have been correlated by Russell 2 * with the John Day. "Beds of 

 light-colored clay and of white volcanic dust, which have been 

 referred to the John Day system, occur at the White Bluffs of the 

 Columbia, 30 miles above Pasco, and are also well exposed in 

 Naehes Valley and near Ellensberg in Yakima County." Knowl- 

 ton 24 has shown that the leaf-bearing beds above the lava in the 

 vicinity of Ellensberg are the correlatives of the Maseall. 



Scott-"' has formulated his views regarding the European 

 equivalents of the White River and John Day in an address 

 delivered before the British Association for the Advancement 

 of Science from which the following extract is taken: 



"The White River is Oligocene (Ronzon) and much misun- 

 derstanding has come from calling it Miocene. The John Day 

 may be placed in the Lower Miocene, though it is somewhat older 

 than the beds at St. Gerand-le-Puy, and follows the White River 

 with hardly a break. None of the American lacustrines is re- 

 ferable to the Middle Miocene. The Loup Fork is Upper Mio- 

 cene, the Deep River division corresponding almost exactly to 

 the beds at Sansan and Steinheim. . .". 



-- Scott. Op. cit., p. 60. 



- 3 Reconnaissance in Southeastern Washington, U. S. G. S. Water Supply 

 and Irrigation Papers, No. 4, 1897. 



-* Ellensberg Folio, U. S. Geol. Atlas, note in descriptive text. 

 25 Eept. Brit. Ass. for the Adv. of Sci., 1895, p. 681. 



