NEW YORK STATE MUSEUM 



254 



Chemung county, brick manufac- 

 turers, 250 4 -51. 

 Chemung shale, 99 4 . 

 Chili, clay deposits, 22S 5 . 

 China clays, 138 3 . 



Chittenango, drain tile works, 222 8 . 

 Cities using brick pavements, 151 6 . 

 Clamps, 171 1 . 



Clarkson, brick yards, 204 5 . 



Clay, general remarks, 137-41 5 ; color 

 of, 13S 3 ; composition, 137 1 ; deposi- 

 tion, 137 2 -38 2 ; "fat" and "lean," 188 7 ; 

 fusibility, 139 3 ; impurities, 138 8 ; 

 plasticity, 13S 4 ; qualities essential to 

 good brick, 138 4 ; refractoriness, 14G 6 - 

 41 1 ; three kinds, 140 s ; weight, 14G 4 . 



Clay deposits, character, 100 5 ; geologic 

 distribution, 100 3 ; table, 240-41. 



Clay industry, statistics, 9S 6 ; growth, 

 98 2 -99 5 ; conduct of business, 17<i 9 -75 2 . 



Clearwater, J. J., assistance acknowl- 

 edged, 98 1 . 



Clinton county, brick manufacturers, 

 246M7. 



Coal dust, effect in brick, 164 9 -G5 1 , 168 3 . 

 Coats bros., brick yard, 196?-97*. 

 Gobbles, 108 8 , 11G 1 , 11£ 5 , 118 5 . 

 Coe, S. E., brick yard, 198 6 . 

 Coeymans' Landing, brick yards, 190 2 - 



91 4 ; clay deposits, 114 2 , 19G 3 ; terrace, 



11G 6 . 



Cohoes, brick yards, 192 9 -93 2 . 



Cold Spring, brick yards, 182 2 ; delta 



deposits, 114 7 ; stratification, 122 9 -2o 2 . 

 Cold Spring Harbor, clay deposits, 



122 7 , 215 4 . 



Color, of brick, 157 1 ; reasons for differ- 

 ences, 139 4 -4G 3 ; 

 of clay ; change through oxida- 

 tion, 102 2 , 104 3 ; table, 240-41; of 

 pure clay, 138 3 . 

 Columbia county, brick manufacturers, 

 244 7 -45. 



Concretions, 111M2 1 , 119 3 , 128 1 , 129*. 

 Conewango, clay deposits, 103 4 . 

 Conlon, J., assistance acknowledged, 

 98 1 . 



Conlon, P. H., assistance acknowl- 

 edged, 2& 1 . 

 Cooney & Farrell, brick yard, 186*. 

 Corning brick co., 154 5 , 235 4 . 



Cornwall-on-Hudson, brick yard, 182 4 ; 

 clay deposits. 182 4 ;deltadeposits,114 8 , 

 115 s ; stratification, 1C4 5 ; terrace, 109 7 . 



Cortland county, brick manufacturers, 



250°-51. 



Corwin & Cullough, brick yards, 19G»- 



91 2 . 



Cost, of brick; dry clay process, 175 3 ; 

 soft mud process, 175*; stiff mud 

 process, 175 3 ; 

 of burning brick, 166 5 ; of dredging 

 clay, 177 3 ; of drying brick, 17G 9 ; of 

 fuel, 175 6 ; of production of brick, 

 174 4 -75 7 ; of working clay, 145 8 -46 J . 



Covered yards, lG2 8 -63 2 ; view, 161 6 . 



Coxsackie, brick yard, 189 5 ; clay 

 deposits, 1£9 5 ; terrace, 116 7 . 



Coykendall, S. D., brickyard, 184 9 -85 2 . 



Cracks in brick, cause, 166 1 . 



Crandall & Marble, brick yards, 212*. 



Crescent, brick yard, 19C 4 . 



Cretaceous clay deposits, 100 3 , 121 7 , 122 2 , 

 128 5 , 13C 8 , 13i 4 , 133 s , 13i 2 , 13C 4 , 225*. 



Crossman bros., brick yard, 215 9 . 



Croton, clay stratification, 104 5 ; delta, 

 111 8 , 115 2 . 



Croton brick co., 177 8 . 



Croton Landing; brick, test of permea- 

 bility, 151 3 ; brick yards, 176 2 -78 4 ; 

 clay deposits, 111 6 ; terraces, 116 9 ; 

 use of steam shovel, 146 9 . 



Croton Point, brick yards, 17'"* 8 ; clay 

 deposits, 111 8 , 177 9 -78 4 ; concretions, 

 110 8 ; dredging at, 147 2 . 



Croton river, delta deposits, 114 7 ; ter- 

 races, 11G 8 , 



Crugers, clay deposits, 112 1 , 17S 5 -79*. 



Crumpled layers, 122 8 , 129 4 , 131 8 . 



Crushing strength, of brick, 149 5 , 181 4 , 

 20G 2 ; of roofing- tile, 238 5 . 



Crushing tests, 153-51 1 . 



Cupola brick, manufacture, 225*. 



Cuylerville, depth of clay, 101 7 . 



Daub, use of, 164 8 . 

 Davenport, W., brick yard, 197 6 . 

 Davidson, D., brick yard, 194 1 . 

 Deerfield, brick yards, 199 1 . 

 Delaney & Lavender, brick yard, 

 19G 9 -91 2 . 



Delta deposits, 104 s , 108 3 , 109 s , 110 3 , 

 114 4 -15 4 , 117 6 . 



