190 
INDEX. 
Page. 
Little Canyon, spring near mouth of, fea- 
tures of 163 
springs in, source of 165 
Little Canyon Creek, features of 69, 70 
Little Canyon lava stream, features of .. 69-70 
Little Lost River, features of 180 
well drilled on, unsuccessful 178 
Little Valley, artesian wells in, features 
of... 175-176 
fossils obtained in 56 
hot spring near bead of, features of . . 169 
Little Wood River, deflection of 133 
Long Tom Creek, quartzite in bills at 
bead of 45 
Lost River country, mountain ranges in, 
character of 47 
resemblance of southeastern Idaho to. 4(1 
Lost rivers, occurrence and features of. 130-133 
Lucas, F. A., determination of fossils by. 56 
M. 
Mc Mullen ranch, artesian well on, fea- 
tures of 177 
Malade River, features of 127-128, 132-133 
Mammoth Cave, reference to 152 
Market Lake Craters, features of. . . 37. 108-109 
lapilli in, stratified, plate showing . . . 108 
lava near, plate showing pressure 
ridge in 94 
plate showing 108 
Martin lava stream, features of 68 69 
Medicine Lodge Creek, features of 130 
Mesozoic rocks in southeastern Idaho, oc- 
currence of 49 
Mining in the region :*2 
Middle Butte, location and features of. -tt 38 
elevation of. 3 1 
slopes of, character of :«'> 
vegetation on 35 36 
Minidoka, well at, depth and tempera 1 are 
of 173 
Mora, well at, depth of 173 
Mountain Home, Canyon Creek Canyon 
near, plate showing wall of. . . 64 
faults north of 120 
features of 1 72 
flowing water at, possibility of obtain- 
ing 182-183 
hot springs at, suggestions relative to 
development of 170 
population of 32, 1 72 
springs near, features of 168-1<>9. 171 
wells of, character of 172 
Mountains in southeastern Idaho, gen- 
eral trend of 46-47 
Mountains surrounding the region, rocks 
of 39 
Mountains visible from the region, char- 
acter of 17 
Mount Bennett rhyolite, character of 42-43 
Mud Lake, features of 130 
N. 
Nampa, well at, depth and temperature of 1 73 
Newell, F. H., field work under direct ion of 13 
North Fork of Snake River, features of. 134 
Notched Butte, cavern on side of, features 
of 99 
Pag«. 
O. 
Oregon Short Line Railroad, wells along, 
features of 173 
wells along, temperature of 153-154 
O winza, Avell at, depth and temperature of 17 
Owyhee, wellat, depth and temperature of 173 
Owyhee Mountains, granite in, occur- 
rence of 42 
lava in, occurrence of ' 71 
Pahoehoe, Dana's description of 90 
Pahoehoe near Cinder Buttes, occurrence 
and characteristics of 91-92 
Paleozoic rocks in central and southeast- 
ern Idaho, occurrence of 49 
Payette formation, occurrence and char- 
acter of 50-51 
Payette Lake, formation and filling of _ . . 15 
Payette River, irrigation from 1(>0 
Peale, A. C, reference to report by 46 
Pence, A. H., artesian well on property 
of, features of 175 
Physiography and geology of the region. 13-146 
Pocatello, population of . 32 
Poison Spring, location of 169 
Population of Idaho 33 
Populations of towns in Idaho. 32 
P< >rt in wif River, upgrading of 133 
Precipitation, mean annual 18 
run-off influenced by rate of 147 
Pre-Tertiary rocks, occurrence and char- 
acterof. 39-49 
Q- 
Quartzite, occurrence and formation of. . 15,45 i 
R. 
Railroads in the region 33 
Rainfall. See Precipitation. 
Rattlesnake Creek, Snake River Canyon 
below mouth of, plate she ) wing. 24 
springs near mouth of, occurrence of. 166 
Residual soils, occurrence of 141 
Rhyolite, occurrence and character of. 15, 42-45 
Roads of the region 33-31 
Roberson, W. N., artesian well on ranch 
of, features of.. 174-175 
Rock Creek, rocks in hills drained by, 
character of _ 44 
well at, features of 177 
wells and springs on 44 
Rock Creek hills, artesian wells in, fea- 
tures of 171)177 
Rocks, porosity of, run-off influenced by. 147 
Rocks of the region, character of 15-17 
disintegration and decay of 122-123 
Ross, D. W., reference to report by 159 
Run-off and underflow, conditions influ- 
encing relations of 147-148! 
Russell, I. C, reference to papers by. 156, 158, 168 
S. 
Sagebrush (Artemisia tridentata), occur- 
rence of 
St. Anthony, population of 
St. John, Orestes, reference to report by. 
22 
