Geology and Mineralogy. 411 
“The rate of fall of the Belly River, by its course, between Coal 
Banks and its mouth, is 6°8 feet to the mile, but on the line above 
Island and Coal Bank, 12 feet to the mile. Adding the general 
slope previously ascertained for the intercalated beds, we find 
their eastward inclination to be 12°77. feet to the mile 
westward and 
lated beds referred to were again brought back to horizontality, 
fe) 
the Great Plains has been derived from the Laurentian and 
Rocky Mount 
roceed 
cademy. Mr. Putnam makes the following statements with 
"egard to the finding of these objects. 
. +he discoveries in question are two elephant pipes and three 
‘Iscribed tablets. Of the latter the first two were found in what 
's known as Mound No. 3, on the Cook farm, adjoining the city 
of Davenport. The principal discoverer was Rev. Jacob Gass, a 
Lutheran clergyman, then settled over a congregation in Daven- 
rt, 
‘Odt an : 
dentally present during the opening of the mound. The discoy- 
*ry was made on January 10th,1877. An exact and careful state- 
*In the region west of the Missouri, the present inclined position of the Plio- 
Cene beds shows that since the time of their disposition that part of the region in 
the Vicinity of the Rocky Mountains has been greatly elevated. It may well 
that the eastward slope of the portion of the plains here treated of may have been 
Produced ag a result of the same great movement, and if so t e facts above 
Tecorded would assign it a date subsequent to that of the glacial peri 
Report of Progress, 1873-74, p. 58. 
