On the Lower Cretaceous beds of Kansas and Nebraska, etc, 225 
blugis above vt. Going down the Platte in a direction nearly con- 
trary to the dip of the strata, we find this sandstone rising up so 
as to form near the mouth of Elk Horn river, bluffs some sixty 
feet in height. Here it seems to rest directly upon upper Car- 
oniferous rocks, Continuing on down the Platte, we find this 
red and yellow sandstone rising higher and higher in the hills 
gradually sink lower and lower until they pass beneath the river 
GOR ene 
Water's edge to an elevation of about eighty feet; while at 
higher points, back on the summits of the hills, the same ee 
reous Te a 
entioned. The sketches of leaves sent by us to Prof. Heer 
ore mostly d from. specimens collected at this locality. 
* The cemeieh. zi i at Fort Leayen- 
gradual desce ssouri river makes its surface 
vorth, about three Somer eet ee than at the mouth of the Platte, hence the 
~ ures of No. 1, seen at the latter locality, near one hundred feet above the 
vn ‘re some four hundred feet above the level of the Missouri at Fort Leaven- 
orth, and of course about three hundred feet lower than the Little Blue river out- 
river localnicn rea West, While the mouth of Platte river, is northeast of 
