160 
INDEX TO NORTH AMERICAN GEOLOGY, 
m 1. 1. .271. 
Economic geology — Continued. 
General — Continued. 
Volcanic origin of natural gasand petroleum, 
Boll (Robert i, 2. 
Volcanic origin of natural gas and petroleum, 
Coster I. 
Volcanic origin of natural gas and petroleum, 
Mickle, 1. 
Volcanic origin of oil, Coste, 2. 
Economic products described. 
Abrasives, Day (D. T. i, 1,2. 
Alkali. Head. 1. 
Alum. Merrill (G. P.), t. 
Alum, Spurr, 5. 
Aluminum Day I D. T. i, L,2. 
Amber, Merrill (G. P.), I. 
Antimony, Day i I' T. i, 1,2. 
Arsenic, < lowan, 1. 
Arsenic, Day i I'. T . 1.2. 
Arsenic. Merrill G. P. 1 
Artesian water, Dart< n. 1. 
Artesian water. Knapp, 1. 
Artesian water. Logan, 2. 
Artesian water. Tarr, 2. 
Artesian water. Todd and Hall, 1. 
Asbestos, Day i D. T.), 1. 2. 
Asbestos; Keith, 2. 
Asl i stos, Merrill (G. P.), 1. 
Asphalt, Merrill (G. P), 1. 
Lsphalt, Phillip 
Asphalt, Taff, •',. 
Asphaltum, Day 1 1>. T. i. 1, 2. 
Barite, Ball ami Smith, 1. 
Barite. Keith. 2. 
Barite, Stese. 1. 
Barytes, Day i D. T. i 1.2. 
Bauxite, Berger, 1. 
Bauxite, Daj i D. 'i'. . 1. 2. 
Bauxite, Merrill i <i. 1'. . 1. 
Bauxite, Smith and McCalley, 1. 
Bauxite. Watson (T. L. . 7. 
Bentonite, Darton, l. 
Bismuth, Day (D. T.), 1. 
Borax, Bailey (G. E. i, 1. 
Borax, Day (D. T.), 1. 2. 
Borax, Merrill (G. P.), 1. 
Bromine, Day | D. 'I' 
Buhrstone, Merrill '..I' . 1. 
Building stone, Bishop, 1. 
Building stone, Buckley and Buehler, 1. 
Building stone, Crosby and Loughlin, 
Building stone. Fairbanks, 2. 
Building stone, Fuller and Clapp, 1. 
Building stone. Hopkins, 1 
Building stone, Keith, J. 
Building stone, Prosser and Beede, 1. 
Building -tone. Reid (J. A. . i . 
Building stone. Sarle, 1 . 
Building stone, Schramm. 1. 
Building stone, Smith and MeCalley, l. 
Calc spar. Merrill (G. I'.' 1. 
Cement. Bleininger, 1. 
Cement, Daj i D. T i, I, 2. 
Cement, Eckel, 10. 
< Jement, Lane, 3. 
1 ement, Peck, 3. 
Cement. Smith I E. A.), 2. 
Economic products described — Continued. 
Cement, Smith arid McCalley, 1. 
chalk, Merrill (G. P.), 1. 
Chromite, Day (D.T.), 1. 
Chromite, Diller, 1. 
Chromite, Keith, 2. 
Chromite, Merrill (G.P.), 1. 
Chromium, Day (D. T.), 2. 
Clay, Beyer and Williams, 1, 2. 
Clay, Bishop, 1. 
clay. Bleininger, 1. 
Clay, Fuller and Clapp, 1. 
Claj . Hopkins, 1. 
Clay. Keith, 2. 
Clay. Kiimmel and Knapp, 1. 
Clay, Lane, 7. 
Clay, Merrill (G. P.), 1. 
Clay. Kics, 3, 4. 
( 'lay, Sarle, 1. 
Clay. Smith aiid McCalley, 1. 
Clay, Woolsey, l. 
coal, Althouse, l. 
( !oal, A.rms1 rong, 1 . 
Coal. Ashley. 1. 2. 
Coal, Bailey I L.W.), 1. 
Coal. Hall and Smith, 1. 
Coal, Blakemore, 1. 
Coal. Burrows, 1. 
Coal, Butts, l. 2. 
Coal, Campbell, 2 i. 
Coal, ( 'oilier and Washburn, 1. 
Coal, Darton. 1. 
Coal, Daj - D.T.), l. 2. 
Coal, Fisher, l. 2. 
Coal. Fletcher, 1. 
< al, Fluck, 1. 
coal. Fowler, l. 
( !oal, Fuller and ( !lapp, 1. 
Coal, Griffith, 1. 
( 'o.-ii. Gwillim, l. 
Coal, Hosea, 1. 
Coal, Jacobs, 1 . 
< !oal, Keyes, 7. 
Coal, Lakes 2. 5, 6. 
• oal, McCallie, 2. 
Coal, McEvoy, 1, 2. 
c^al. Martin, 1. 
Coal, Merrill (G. P.), 1. 
Coal, Phillip-. 6. 
Coal, Poole, I. 2. 
Coal, Pultz, l. 
Coal, Richardson, 1. 
< 'oal, Robinson, 1 . 
( loal, Schrader, i . 
( !oal, Sheridan, 1. 
Coal, smith (G. 0. i, l. 
( oal, Smith and McCalley, 1. 
< oal. Spurr, 4. 
< !oal, Stoneham, 1. 
Coal, Sutton. I. 
Coal, Taff, 1 5. 
Coal, Turnbull, l. 
( o.ii, Vicairc, 1 . 
Cobalt, Day ! D. T.), 1, 2. 
Cobalt, Merrill (G. P.), 1. 
Cobalt, Miller (W. G.), 1. 
Coke, Day | D. T.i, 1, 2. 
