Succession of the Ozark Series. — Br^oadhead. 265- 
sandstone is seen. A little farther up stream it rises in the hills 
and the third Magnesian limestone appears below. As we pass up 
stream the rocks rise to the south and at the mouth of Profflt's creek 
the second sandstone is on the hilltop with the third Magnesian lime- 
stone below. The second sandstone is also found on Maries creek 
a mile from its mouth and is alwa3's a coarse grained rock, coarser 
than the first and never so white; it is often a buff color with 
white specks sometimes ferruginous, and man}' iron ore beds of 
south Missouri are associated with it, as at the Meremec Iron 
works. It is the highest rock on the bluffs near Arlington where 
it rests on the third Magnesian limestone 180 feet above the 
valley. 
Some of Mr. Nason's sections on the Gasconade in the Iron Ore re- 
port agree with mine, but he has failed to note the rocks at Mount 
Sterling, 20 miles south of Missouri river where we find that 
the third Magnesian limestone has dipped below the surface and 
soon the second sandstone also disappears dipping northwardly. 
At Fredericksburgh,ten miles south of Missouri river, the first 
sandstone appears, and at the mouth of the Gasconade it occupies 
the hilltop with over 250 feet of second Magnesian limestone 
below. The first and second sandstones are geologically everywhere 
over 250 feet apart. Yet in this report (p. 112) they are con- 
sidered to be the same!! That on the hilltop at Arlington is the 
second sandstone and it continues to occupy the same position 
along the Gasconade river in Maries count}' and nearl}' half wa}' 
through Osage. 
The Third Magnesian limestone is found in the bluffs below the 
second sandstone and cannot be confounded with the second Mag- 
nesian. It occurs in much thicker beds, sometimes as much as 
20 feet and they are often (especially the thicker beds) of a del- 
icate flesh color. The upper beds are often coarse and of a gray 
color. Chert beds occur but not so often are they accompanied 
with shale as are those of the second Magesian limestone. Thick 
beds of limestone do occur near the base of the second Magnesian. 
In sections opposite page 106 of Mr. Nason's report we find a thin 
bed marked "fossils" in nearly all of his sections up to No. 26, 
but strange to say it is omitted in 26,30 and 32, and in his written 
report he says nothing about fossils in those sections; yet in a 
subsequent article in the American Geologist he makes the state- 
ment that fossils are found in a stratum that has been followed all 
