Succession of the Ozark Series. — Broadhead. 267 
first sandstone. In his report on Miller county Mr. Meek men- 
tions finding a few casts of fossils, including Euomphalus and 
other Grasteropoda, in chert beds and sandy la3'ers of the second 
sandstone but names none from the first sandstone, nor does 
Shumard anywhere sa}' anything about fossils from Miller county, 
as stated b}' Mr. Nason. 
On page 111 we ai-e informed that Shumard had obtained or re- 
ported an Orthoceratlte from Maries count}', with Straparallus 
a-ndChemiiitzia from Ozark count}^ and the pA'gidium of an Arion- 
ellus from Wright count}'; the author of the iron report saj^s that 
Shumard affirms that these are from the first sandstone. Refer- 
ring to the geological report of 1855-1871, p. 10, we find that 
Broadhead and not Shumard (as Nason says) found what seemed 
to be the fragment of an Orthoceratlte in Maries count}'. In 
Shumard's report of Ozark county (Rep. 1855-71), Dr. Shumard 
states that a few internal casts of Straparollus and Ckemnitzia are 
found, but were too imperfect for accurate determination. In the 
same report Shumard mentions other fossils found in the second 
Magnesian limestone, and also states that he found fossils in the 
second sandstone and the third Magnesian limestone. 
Some fossils found in the second Magnesian limestone also are 
found in lower series, as Straparollus, Murchisonia, Ckemnitzia. 
Dr. Shumard was too good a geologist and palaeontologist to make 
serious mistakes. He was thoroughly acquainted with the whole 
Ozark series. A specialist in a certain line, as a mining engineer, 
may be an excellent expert, but he cannot easily trace out the 
connection and sequence of beds. 
In the interior portion of south Missouri the Ozarks are pushed 
up, forming the flattened dome of the Ozark plateau and tlie sur- 
face strata are of the Ozark series. Within twenty miles of the 
Missouri the strata are found dipping northwardly. On the Mis- 
souri river bluffs, from the Osage to the east part of Franklin 
county, the strata along the south side of the river are all of Cam- 
brian age. We do indeed find a few residual fragments of Lower 
Carboniferous chert and fossils but no Silurian or Devonian. On 
the north side of the river the Ozark series is overlaid by Lower 
Silurian all the way from St. Charles county to Callaway. With- 
in ten miles north the Silurian is concealed by the overlying Lower 
Carboniferous, which is the surface rock, and the ridge dividing 
the waters flowing into the Missouri from those flowing into the 
