30 TJie American Geologist. January, 19(k> 
Proteoides daphnogenoides Heer. 
Embrothrites daphneoides Lx. 
Laurus Plutonia Heer. 
Eucalyptus geinitzi Heer. 
Eucalyptus, sp. 
Eucalyptus gouldii, n. sp. * ~' 
During the summer of 1898 much larger collections were 
made. The leaves have not yet been identified specifically but 
in addition to the names given above the following genera 
seem to be represented : Sterculia, Populus, Betulites, Quer- 
cus, Ficus, Salix, etc. 
C. The Mentor-Marquette Region. 
I. The Mentor Bed. 
a. History and Description. 
The two localities in central Kansas in which Lower 
Cretaceous rocks are exposed are connected ; still, like the area 
in southwestern Kansas, they may be separated on lithological 
grounds. 
Mentor, the village from which the beds are named is 
situated six miles south of Salina, the county seat of Saline 
county ; and Marquette is twenty miles southwest of Mentor in 
the northwestern part of McPherson county. Both towns are 
on the Smoky Hill river. From Belvidere to Marquette, as 
the crow flies, is one hundred miles, and from Ashland to 
Salina one hundred and fifty miles. The intervening country 
including the counties of Ford, Kiowa, Pratt, Stafford, Reno. 
Edwards, Pawnee, Barton and Rice is covered with the Tertiary 
and the Pleistocene. Wells over this region reach water, which 
is known locally as sheet water, near the base of the Tertiary 
at a depth of from twenty to one hundred and fifty feet. This 
represents approximately the depth of the strata which covers 
the Cretaceous. 
A line of blufifs a few miles back from the Arkansas river 
is composed of Dakota sandstone often containing leaves. Be- 
tween Dodge City and Great Bend, a distance of eighty miles, 
in only three instances do these bluft's approach the river, viz : 
near Ford City, at Larned and at Pawnee Rock. .At the last 
two localities fossil leaves were found. 
♦Described in Bulletin Torrey Botanical Club, vol. XXIV", pp. 576- 
577, 1897. 
