INDEX 



8 9 



Union Springs, gypsum quarry, 72 4 . 

 United States, distribution of salt, 7 5 . 

 Upper Silurian period, See Salina group. 



Vacuum oil co., discovery of salt by, 20 2 . 

 Vacuum pan evaporation, 61. 

 Vats, See Salt aprons; Rooms. 

 Vermicular lime rock, 22 8 . 

 Vernon Centre, salt springs at, 18 3 . 

 Victor, gypsum quarries at, 74 s — 75'. 



Wages of gypsum workers, 74 1 . 

 Warsaw, rock salt at, 20 4 ; salt works at, 



20 4 , 33 7 -34 ! - 

 Wayne co., salt springs, 1S 6 . 

 Weeks, Samuel, quarry, 75 4 . 



Well sections, table in pocket. 



Wells, boring and tubing, 33 2 ~36'; num- 

 ber and composition of Onondaga, 58 s . 



Werlock, Cyrus, gypsum quarry, 80 6 . 



Weston and Alvord, plaster mill, 79 s . 



Wheatland land plaster co., quarry, 72 2 , 

 76 5 . 



Wheeler, Horace, gypsum quarry, 79 9 . 



White, R. D., assistance acknowledged, 5 9 . 



Winchell, B. F., gypsum quarry, 80 5 . 



Worcester brand of salt, 61 8 . 



Wyoming, rock salt at, 20 1 ; salt works at, 

 20 8 , 49 2 . 



York, salt springs near, 19 1 ; salt works 

 at, 21 3 . 



