INDEX. 



A. Page. 



Agricultural land laws, acquisition 



of mineral land under 36 



provisions of 20-23 



purpose of 20 



See also Homesteads ; Desert 



land ; Timber and stone 



land. 

 Agricultural lands, existing public 



domain in 8 



Agriculture, information as to, from 



classification 156 



Apex, law of 24,39,48 



Appalachian field, oil in 116 



Applicant's affidavits, classification 



by 33 



Arizona, enlarged homesteads in 22 



Asbestos, occurrence of 140 



Ashley, G. H., work of 9 



Asphalt, occurrence of 140 



Assessment work, requirement of_ 24, 25, 49 



Authorship, division of 9-11 



B. 



Ball, M. W., work of 9 



Base maps. See Topographic maps. 



Borax, occurrence of 139 



Building stone, deposits of, laws con- 

 cerning 25-26 



C. 



California, oil In 117 



Calkins, F. C, work of 10 



Campbell, M. R., work of 11 



Canals. See Irrigation canals 28 



Carey Act, proceedings under 185-187 



provisions of 30-31 



Chance, H. M., curves of, use of, in 



valuing coal lands 83 



Clark, F. E., work of 10 



Classification. See Land classifica- 

 tion ; Water supply. 

 Coal, attitude of, allowance for, in 



classification 70-73, 92 



attitude of, allowance for, in 



valuation 87—92 



determination of 105 



broken beds of, allowance for, in 



classification 70 



allowance for, in classifica- 

 tion, chart showing 71 



burned beds of, allowance for, in 



valuation 79 



depth to, allowance for, in classi- 

 fication < 73-78 



allowance for, in valuation_75, 01-03 



78894°— Bull. 537—13 13 



Page. 



Coal, depth of, determination of 105 



depth of, limits of, chart show- 

 ing 75 



Irregular beds of, allowance for, 



in classification 72-73 



allowance for, in valuation 87-90 



chart showing 89 



mining cost of, allowance for, in 



valuation 82 



figure showing 85 



multiple beds of, valuation of 93 



quality of, allowance for, in 



classification 68-69 



allowance for, in valuation 82 



determination of 59, 68, 105-108 



royalty on 80-81 



sampling of, method of 108 



thickness of, allowance for, In 



classification 69-73 



allowance for, in valuation 83—90 



determination of 100-104 



value of, in ground 79-81 



weathering of, depreciation by 78—79 



workability of, allowance for, in 



classification 66-78 



See also Coal lands ; Coal bed?. 



Coal beds, persistence of 100-104 



persistence of, uncertainty of 94 



Coal lands, access to, by rail, allow- 

 ance for 95 



acquisition of, under agricultural 



land laws 36 



area of, still belonging to United 



States 8 



classification of, authority for 63 



factors involved in 67-78 



field methods of 50-53, 59-60 



methods of 66-79 



organization for 16-17 



principles involved in 66-67 



procedure in 108—110 



progress in 111 



purpose of 65-66 



review of 95 



regulations for 96 



coal in, value of, in ground 79-81 



extent of 100-108 



faults in, allowance for 93 



field work on 98-108 



40-acre tracts of, classification 



by 78,99 



geographic location of 99 



geology of, necessity for field de- 

 termination of 99-100 



intrusions in, allowance for 94 



laws concerning 27,37,45-46 



maximum price of 95 



193 



