INDEX 



Abrasion of stones, 44 



Absorption of rock, 42 



Adirondacks, basic rocks in, 144; 

 crystalline limestone, 182-85 ; east- 

 ern, granitic rocks in, 90-92; 

 geology, 51 ; western, granitic 

 rocks in, 79-82 



Alexandria Bay area, yj 



American Feldspar & Milling Co., 

 quarry, 168 



Amphibolite, 15 



Anorthosite, 22, 51, 60-61, 91 ; Au- 

 sable Forks, 96; Keeseville, 98-101; 

 Split Rock 102 



Ashley quarry, 165 



Ausable Forks, anorthosite area, 96; 

 red granite, 97; syenite area, 92- 

 96 



Ausable Granite Company, quarry, 



94 



Barrett Manufacturing Company, 

 quarry, 164 



Basic rocks in the Adirondacks, 144 



Becker, cited, 17 



Bedford, pegmatite, 171 



Bedford Feldspar Co., quarry, 173 



Beekman quarry, 127 



Beekmantown limestone, 54; perme- 

 ability, 42 



Berkey, C. P., cited, 22, 52 



Black River limestone, 55 



Bluestone, 11, 21, 56 



Breakneck ridge, quarries on, 108 



Bullock quarry, 174 



Campbell quarry, 131 

 Canton, marble, 192 

 Carnes, F. G., quarries, 95 

 Catskill limestone quarries, 204 

 Cement industry, 9 



Chazy limestone, 54; permeability, 



42 

 Chemical composition of rocks, 24, 



38 

 Chestertown, pegmatite, :66 

 Chicago Granite Company, quarry, 



72 

 Clays, 27 



Clements', Charles, quarry, 95 

 Clinton shale, 56 

 Cobleskill limestone, 56 

 Color of rocks, 30-32 

 Conglomerates, 27 

 Corinth, pegmatite, 168 

 Cornell quarry, 119 

 Cortlandt basic rocks, 149-50 

 Crown Point, pegmatite. 161 

 Crown Point Spar Company, quarry, 



161 

 Crushing strength, 44 

 Crystalline limestone, Highlands, 



193 ; of the Adirondacks, 182-85 

 Crystalline silicate rocks, 58-69 

 Gushing, H. P. cited, 69, 71 



Dale, T. N., cited, 17, 23, 180 



Dannemora granite area, 102 



De Kalb, pegmatite, 169 



Delesse, M. A., cited, yj 



Denesia property, 170 



Diabase, 63-64, 91 ; Palisades, 151 



Diabase dike, 147 



Diana-Pitcairn syenite, 87-89 



Dickinson, H. T., cited, 8, 21 



Differential parting, 21 



Diorite, 61-62 



Dover Plains, marble, 195 



Dover White Marble Company, 



quarry, 198 

 Duell & Holloway quarry, 135 



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