INDEX. 
Abert Lake, descriptive notes 7, 8, 29, 33 
Absorption: 
Factors influencing, summary 24 
Phenomena in weathering zone 21-24 
Relation to saline solutions 21-24 
Adams, G. I., citation 35 
Adularia occurrence, Nevada, potash percentage 65 
Alkali crusts, description, occurrence, origin, analyses, etc 33, 36, 43, 45, 60, 66-67, 82, 83, 85 
Alkali Lakes, North, Middle, and South^ notes 1, 7, 19, 33, 64 
Alkali salts, movement in soils 26, 66 
Alkali Valley. (See Sand Springs Flat.) 
Alluvial material as source of salines 18 
Altitude, as factor controlling rainfall in Great Basin region 3, 10 
Alum deposits, Great Basin 34-35 
Alunite occurrence, Great Basin 35-36, 65 
Alvord Lake Basin, descriptive notes 8, 39 
Amargosa Basin, descriptive notes 1, 3, 4, 5, 24, 39, 78 
Amargosa River, descriptive notes 1, 4, 8, 9, 29, 32 
Analyses: 
Alkali efflorescences 33, 36, 66-67, 82, 83, 85 
Borax efflorescence „ _ 33 
Borings, Dixie Valley 54-56 
Borings, Searles Lake 48, 49, 87, 89 
Brine, Owens Lake 51 
Brine, Searles Lake 52, 53 
Brines, Death Valley 45-47, 85-86 
Brines, etc., Saline Valley, Cal •. 43 
Brines, Silver Peak Marsh 41 
Gypsum deposits, Great Basin 65-66 
Hot spring water, Nevada 18, 19, 35 
Lake bed deposits , 18 
Material from deep bore, Searles Marsh „ 88 
Material from lake beds northeast of Mina 18 
Material from Searles deep well 87, 88, 89 
Mud samples, Columbus Marsh, Nev 54 
Mud samples, Searles Lake well 88 
Muds and crusts. Black Rock Desert, Nev 60 
Potash , Death Valley, Cal 47 
Salt, water, and saline crusts, Railroad Valley, Nev., tables 83-85 
Soils, humid and arid regions, comparison 24-25 
Soluble salts in soils „ 78-79 
Waters, Black Rock Desert, Nev 60 
Waters, hot springs 18-19, 35, 60 
Waters, lake and river, comparison, etc 27-30, 80 
Waters, underground and surface 24, 77, 78 
Analysis: 
Hardpan, Nevada 23 
Salts in sand, Rhodes Marsh 43 
Arid region, soluble salts in soils, movement, etc 25-27 
Arid regions, soils, analyses, comparison with soils of humid regions 24-25 
Aridity, high, area in Great Basin '. 3 
Artesian areas, Great Basin region 13, 58, 63 
Atmosphere, contribution to salines of Great Basin 20 
Bailey, G. E., citation on salt bed, San Bernardino, Cal 7 
Bailey, R . K., potash analyses 47 
Baker, Charles. Laurence, citation on borax deposits 34 
Basin systems composing the Great Basin region -. 1, 67-68 
Basins: 
Desert, formation, typical cases, description, etc 39-60, 66-67 
Desert, structural development 37-39, 67 
Lake, composing the Great Basin region, list, areas, etc 1-3,67-68 
Bear River, descriptive notes 29, 30, 81 
Big Smokv Valley, descriptive notes 1, 12 
Black Rock Desert Lake, notes 1 , 3, 39, 61 , 62 
Black Rock Desert, Nev., location, description, analyses, etc 60,61,62,63 
Bonneville Basin, descriptive notes 1, 4, 7, 8, 30, 31, 59, 61 
Borates: 
Absence in certain desert basins '. 42 
Deposits in Great Basin 7, 33-34, 66 
Presence in lake waters 30 
Borax: 
Bedded deposits, location and origin 34 
Deposits, workable, type and locations, etc "... 33-34,42,46,54 
Efflorescences, Searles Lake, analyses 33 
Supply, Great Basin region, notes 7, 33, 34 
91 
