Coal Measures of Kansas. — Keyes. 
349 
of the Geological Survey of Kansas, a little octavo volume 
of 200 pages. In it he gives a very detailed general section 
of the Carboniferous rocks of the eastern part of the state. 
Descriptive notes characterize the different beds, their fossili- 
ferous contents are often listed, and localities where sections 
are best seen are given. To some of the more important mem- 
bers special names are given, some of them geographic. Of 
Miami county, on the eastern border of the state, he gives an 
especially clear and detailed account. Many of Swallow's local 
names are still widely known in Kansas, vet there has been no 
way of making comparisons with the new classifications of 
the rocks. The recently issued geological reports of Kansas 
give but faint clue. In these volumes one must almost look in 
vain to find out whether such men as Swallow, Broadhead, 
Meek and Hayden had ever entered the state, much less pub- 
lished extensively on their important explorations. 
The recent classification of the median Carboniferous 
strata of eastern Kansas is about as follows: 
Series 
Terr.\ne 
Thickness 
Missourian 
Cottonwood limestone 
.\tcliison shales 
Forbes limestones 
Platte shales 
Plattsmouth limestoues 
Lawrence shales 
Stanton limestones 
Parkville shales 
lola limestone 
Thayer shales 
Bethany limestones 
10 
.■iOO 
25 
1(1.1 
, 30 
265 
35 
75 
30 
50 
75 
Des Moines 
Marais des Cygnes shales 
Henrietta limestones 
Cherokee shales 
250 
50 
200 
The thickness of the different terranes varies considerably. 
The thickness of some of them is more than double the figures 
here given. The section, however, may be taken as a standard 
for comparison. 
The importance of Swallow's work, historically considered, 
lies in the fact that some of his geographic names applied to 
geological terranes will have to stand as valid terms. Swal- 
low's correlations, however, were bad, and it is probably on 
