420 E. DOIULAS GKOLOGY OF THE IINTA FORMATION 



With regard to the subdivisions of the Uinta, Mr. Peterson and Mr. 

 Douglass have discussed the matter together and with Professor Osborn, 

 and the latter has gone over the matter with Mr. Riggs, and there appears 

 to be an agreement a.s to the dividing line between Lower and Upper "A" 

 and between '^A" and "B." Though the exact division line between "B" 

 and "C" has not been fixed with certainty, Peterson and Douglass agree 

 as to where it should be placed provisi^onally. 



