A462 University Geological Survey of Kansas. 
while only a few of the Lansing species occur in the Lower 
Coal Measures as used in English literature. The general ap- 
pearance of the flora as a whole is similar to the Middle rather 
than to the Upper Coal Measures of England, a result in agree- 
ment with White’s correlation of the Clinton flora with the 
English Middle Coal Measures. The proportion of Upper Coal 
Measure species, however, is greater at the Lansing than at 
the Clinton locality. As compared with the Westphalian of 
Europe, the Lansing flora seems to find its closest resemblance 
to the middle and upper zones of the Valenciennes basin corre- 
lated by Zeiller and by Kidston with the English Middle beds 
and transitional to the Upper Coal Measures respectively. 
FLORA OF THE DOUGLAS FORMATION. 
As compared with European Coal Measures the flora of the 
Douglas formation presents a close resemblance to that of the 
Commentry coal-fields of France, the Stephanian, or distinctly 
Upper Coal Measures. Among the species of comparatively 
restricted range and diagnostic value common to the two ter- 
ranes are the following: Odontopteris genuina, O. minor, Pec- 
opteris candolliana, Alethopteris grandini, and Daubreeia pa- 
tereformis. 
The change of flora from the Cherokee shales to the Douglas 
formation is decidedly marked. Hardly more than a fifth of the 
species collected have continued from the Cherokee into the 
Le Roy and Lawrence shales. Two of these, Neuropteris 
scheuchzeri and N. ovata, are represented in the Douglas for- 
mation by forms which should perhaps be considered as dis- 
tinct varieties. The advance of the Douglas flora over that of 
the Cherokee shales is indicated by a greater development of 
odontopterid and pecopterid ferns. The flora of the inter- 
vening formations is very incompletely known. The two lo- 
ealities from which small collections have been made, Thayer 
in the Chanute shales, and Kansas City, near the base of the 
Bethany Falls limestone, both have floras resembling the Doug- 
las flora more than the Cherokee flora. 
THE FLORA OF THE WELLINGTON SHALES. 
The flora of the Wellington differs in toto, so far as species 
are concerned, from that of the Cherokee shales, and contains 
only a small proportion of species found in the Douglas forma- 
tion. Of the species listed from the Wellington only a few have 
been positively identified with forms found in the Le Roy and 
