HURON AND CLEVELAND SHALES OF NORTHERN OHIO 327 
Ry., from 4 to 6 in. of black shale are shown. Some of it is more 
or less mottled with gray lines and splotches and under water is 
apparently a light-gray layer. The shale must form the bottom of 
the lake for some distance out from the shore, and numerous 
spherical concretions partly covered by water occur. These con- 
cretions extend along the lake shore for about one-half mile and are 
about midway between Huron and Rye Beach. This is the 
Fic. 2.—Slate Cut showing the upper part of Prout limestone and lower Huron 
shales. Mr. Roderick stands on top of Prout limestone. 
locality where Dr. Kindle, on the authority of Professor E. B. 
Branson, reports Dinichthys herzert Newb.‘ and which Branson gave 
as from 50 to 60 ft. above the base of the Huron.? 
SECTIONS ON THE HURON RIVER 
Milan section.—The most northern outcrop of Huron shale, as 
well as the lowest stratigraphically, on the Huron River is on its 
western bank a short distance south of the river bridge at Milan 
* American Journal Science, 4th ser., XXXIV, 211. 
? University of Missouri Bulletin, Science ser., II, No. 2 (October, 1911), p. 25. 
