40 F. V. Hayden on the Geology of Kansas. 
eement as could be expected in the measurement of such 
variable strata at different localities; yet when there is a differ- 
ence of 116 feet, and the numerous subordinate beds composing 
the whole are stated as varying in thickness at different plac 
from 1 to 15 feet, 4 to 12 feet, 10 to 25 feet, and so on, on 
would naturally suppose that the odd inch might have been — 
dispensed with in summing up the whole, as it gives the ap- _ 
pearance of minute exactness, manifestly unattainable in the 
measurement of such strata. 
trilobate leaf is now known to be from the Cretaceous, a3 
shown by Meek and Hayden, the paleontological evidence yet 
ined of h m 
