INDEX. 95 
Saline: Page- 
trusts, Railroad Valley, analyses 85 
Deposits, occurrence, description, etc 32-37, 66, 67 
Segregates, geological formations and localities 6-7 
Saline Valley Basin, descriptive notes 1, 39, 42, 43-44 
Salines: 
Buried deposits, location, explorations, etc 60-64 
Collection in surface waters 27-32, 80, 81 
Discharge from rivers into lake basins 30, 31, 81 
Great Basin region, sources 14-20 
In present lakes of Great Basin 64-66 
In soils, nature 25, 27, 66-67, 78-79 
Mineralogy 3,69-70 
See also Salts. 
Salt beds: 
Silver Peak Marsh, Nev 40-41, 42 
Dixie Valley, Nev 54-56 
In Great Basin geological formations 7, 17, 18 
Searles Marsh, formation, etc 48, 52 
Salt: 
Crusts, analyses 43, 45, 60, 66 
Deposits, Death Valley 44-45, 46 
Found in lake bed deposits 17, 18 
Rhodes Marsh, analysis 43 
Lake Valley, descriptive notes 13, 25 
Production from brines of Great Salt Lake and Owens Lake 64 
Valley. (See Dixie Valley.) 
See also Sodium chloride. 
Salton Sink, descriptive notes 4, 10 
Salts: 
Alkali, movements in soils 26, 66 
Collected by rivers of world, per square mile, estimate 31 
Content of Great Salt Lake 64 
Deposits, buried, location, explorations, etc 60-64 
Deposits, Searles Marsh, formation, etc 48-53, 64 
Reactions under weathering 20-24 
Soluble, depth of accumulations in soil 26-27, 67 
Soluble, in soils, analyses 78-79 
Soluble, losses caused by absorption 21-24 
Soluble, movement in arid soils 25-26, 66 
Soluble, ratio in arid and humid soils 24-25, 78-79 
Soluble, retention by soils of arid regions 25-26, 66 
See a Iso Alkali: Salines. 
San Ysabel Creek, note 31, 81 
Sand Springs Flat, Nev., location, description, etc 39,59 
Santa Ynez River, note 28 
Santa Maria River, note 28 
Sealing over saline deposits desert basins 45, 52, 66 
Searles: 
Basin, descriptive notes 1, 7, 12, 32, 39, 60 
Deep well, analvses of samples, and petographic examination 87, 88, 89 
Deep well, samples, analyses, tables 87, 88, 89 
Lake formation and various stages, brines, etc 33, 51-53, 60, 64, 65 
Marsh, location, description, chemical data, etc 12, 32, 33, 39, 48-53, 60, 64 
Semiarid regions, mineral content of waters, comparisons, etc 28-30 
Sevier Lake, Utah, location, description, analyses of saline beds, etc .- 7, 9, 29, 59-60 
Sierra Valley, topography 4-5 
Silver Lake Valley, descriptive notes ' 8, 12 
Silver Peak Marsh, conditions, formation, description, analyses, etc 6, 12, 19, 38, 39-43, 53 
Smoke Creek Desert, Nev. , location, description, analyses, etc 60, 61 
Soda production at Large Soda Lake, Nev 64 
Sodium: 
Annual accumulation of Great Basin 32 
Chloride content, borings from Searles Lake, notes 48-53 
Chloride deposits, Great Basin 17, 18, 42, 60 
Chloride production, Silver Peak Marsh . _ 42 
Chloride. (See also Salt.) 
Ratio to potassium, in waters and soils, Great Basin 24, 25, 27, 87 
Salts, products from brines of Great Salt Lake and Owens Lake 64 
Sulphate deuosits, Sevier Lake, Utah 60 
Soils: 
A nalyses, humid and arid regions 24-25, 78-79 
Arid regions, retention and movement of soluble salts 25-26, 66 
Bureau, cooperation with United States Geological Survey in potash studies 2, 3 
Soluble salts, accumulations, depth. 26-27, 66-67 
Soluble salts, analvses 78-79 
Spring waters, analyses, Great Basin 18-19, 35, 43, 60, 77 
Springs, Great Basin region - 13, 18-19 
Spurr, citations 7, 34, 41, 42 
Stassfurt deposits, Germany, origin 66 
Streams, Great Basin region, description, run-off, etc 1,4, 8-10, 27-30, 73-74 
Sullivan, E. C, citations 21-23 
Summer Lake, notes 8, 33 
Surprise Valley Basin, note 8 
Susan River, notes ■ 8 
Teels Marsh, descriptive notes 1, 33, 38, 39, 42 
Temperature: 
Effect on formation of saline minerals 69 
Records, Great Basin 4, 73 
