INDEX. 
A. 
Page. 
Acme Plaster Company well, record of 71 
Alluvium, character and distribution of 46 
Alsop ranch, well on 73 
Arlington, structure near ",0-51 
well at 75 
B. 
Benton formation, character and distribu- 
tion of 32-34 
fossils of 34 
sandstone in, view of 34 
sections of 33-34 
water in 67 
Bentonite, composition and analyses of 58 
occurrence and character of 34, 58-61 
production and price of 61 
uses of 60 
Big Basin, description of 9 
Big I follow, description of 9 
Boswell Spring, description of 76 
Boulder Ridge, structure of 47-48 
Bricks, making of 66 
Brooklyn Lake, epsomite at 64 
epsomite at, analysis of 64 
Brown mine, coal of, analyses of 56 
C. 
Carboniferous rocks, occurrence and charac- 
ter of 13-22 
Casper formation, character and distribu- 
tion of 13-18 
correlation of . . 20 
fossils and age of 19-20 
limestone of 18-19 
analysis of 66 
sandstone erosion in , views of 8, 14 
sections of 14-18 
water in 67 
Cement materials, character and distribu- 
tion of 65 
Centennial Valley, section in 32 
st ructure in 49-50 
Chalk Bluffs, bentonite at 61 
Chase mine, coal of, analysis of. ... 56 
Chugwater formation, age of 25 
character and distribution 22-25 
gypsum in 25 
section of 23-24 
Clay, occurrence and character of 66 
Climate, discussion of 9-11 
Cloverly formation, character and distribu- 
tion Of 30-32 
sections of 31-32 
water in 67 
Page. 
Coal, occurrence and character of 36,53-66 
Coal Bank Creek, coal on 36 
Colores, sections near 17 
spring near 75 
Como anticline, structure in 52 
Como Ridge, sections in 26,28 
Cooper Creek, coal on 36,55-56 
well on 74-75 
Cooper Lake basin, rocks in 43^4 
sections in 43-44 
Copper, occurrence of 66-67 
County well, record of 70 
Cretaceous rocks, occurrence and character of 27-42 
1). 
Davis ranch, spring on 76 
spring on, analysis of 76 
Dinosaur remains, occurrence of 30 
Downey Lakes, section near 28 
soda at 61-63 
analysis of 62 
Downie ranch, well at 73 
well at, record of 73 
Drainage, description of 9 
Dutton Creek, coal on 54-55 
coal on, analysis of 56 
sections on 44,54 
well on 74 
E. 
Empire ranch, coal at, analysis of 55 
well at 74 
record of 54 
Epsomite, analysis of 61 
character and distribution of 61 
Erosion, forms of 18-19 
F. 
Faults, character and distribution of 18,50 
Fish hatchery, view of 16 
Fivemile Creek, gypsite on 58 
Flattop, structure at 52 53 
Forelle limestone, correlation <>f 21 
fossils of 21 
occurrence and character of 20 21 
Fossils, occurrence and character of 19-20 
Freezeout Hills, sections in 27,28 
structure in 
G. 
Geography of area, discussion of 8-9 
description of 1 1 53 
Gilmore Canyon, section in II 
Girty, G. II., fossils determined bj 19,20,21 
79 
