80 
INDEX. 
Page. 
Glacial drift, occurrence and character of 45 
Granite, occurrence and character of 12 
Gypsite, character and distribution of 58 
Gypsum, character and distribution of 56-58 
H. 
Hague, Arnold, fossils determined by 19-20 
Harney Creek, gypsite near 58 
Harper, coal near 54 
Hays ranch, spring on 76 
Homer ranch . well on 74 
Howell, section near 33 
Hutton Lake, bentonite on 61 
sections near 31, 33-34 
J. 
Jehu Mountain, description of 8 
section near 33 
structure of 48-49 
Jurassic rocks, occurrence and character of. . 26-27 
K. 
Knight, W. C, fossils found by 21 
on geology of region 13,24 
on soda deposits 62 
Knowlton, F. II., and Stanton, T. W., on fos- 
sils of the Laramie 37-42 
L. 
Laramie, gypsite near 58 
springs near 75 
analysis of 76-77 
temperature and rainfall at 10-11 
wells at 68-72 
records of 69, 70, 71 
Laramie Peak, view of 8 
Laramie Plains, view across 10 
Laramie Range description of ... 8, 13 
structure of 46-47 
Tertiary deposits in, view of 44 
Laramie River,, coal on 36 
description of 9 
sections on 32 
water of, analysis ol 76-77 
Limestone, analysis of 66 
occurrence and character of 66 
Limestone beds, occurrence and character of. 14-18 
weathering of 18-19 
Little Laramie River, description of 9 
Little Medicine Bow River, rocks on 44-45 
Location of area 7, 8 
Logan, W . N., on Sundance formation 26-27 
Lookout Flat, section of 37 
M. 
McGibbons Spring, flow of 75 
Mansfield ranch, well on 74 
Map, geologic, of area 7 
Map, index, of area 7 
Medicine Bow, sandstone near, view of 34 
section near 34 
Medicine Bow Mountains, description of 8 
Medicine Bow River, description of 9 
Mill Creek, coal on, analysis of 56 
Mineral resources, description of 53-67 
Miser, sections near 34, 37 
Page. 
Montana group, character and distribution of. 35-37 
fossils and age of : 37-42 
sandstone in, view of 34 
sections of 37 
water in 67 
Moraines, character and distribution of 45 
Morrison sandstone, age of 30 
character and distribution of 27-29 
fossils and age of 29-30 
Mud Springs, flow from 75 
N. 
Niobrara formation, character and distribu- 
tion of 34-35 
O. 
Oil well, data on 73-74 
record of 74 
P. 
Pelton ranch, wells on. . . 73 
wells on, water of, analysis of 76-77 
Pine Ridge, coal on , 54 
sandstone at, view of 34 
Plumbago Canyon, section in 17-18 
Precipitation, records of 10-11 
Q. 
Quaternary rocks, occurrence and character 
of 45-46 
R. 
Red beds, occurrence and character of 15 
sections of 15-16 
Red Buttes, eroded sandstones at 14 
gypsum at 22,56-58 
analysis of 57 
Red Mountain, gypsum at 56 
rocks in 44 
sections at and near 15-16,23-24,33,57 
structure of 48-49 
Rice Spring, description of 76 
Riverside ranch, bentonite on 61 
Rock Creek, bentonite on 60-61 
coal on 36, 53-54 
analyses of 56 
soda at 64 
analyses of 64 
view of 12 
Rock Creek anticline, structure of 51-52 
Rock gypsum , analysis of 57 
character and distribution of 56-58 
section of 57 
Rock River anticline, section on 51 
S. 
Sand, character and distribution of 65-66 
Sand Creek, bentonite on 61 
eroded sandstone on, view of 8 
section on 15 
Satanka shale, gypsum in 22 
occurrence and character of 22 
Sheep Mountain, description of 8 
rocks of 44 
structure of 50-51 
Soda sulphate, analyses of 62-64 
character and distribution of 61-64 
