ROCKS. 51 



Names. Associates and localities. 



■169 Selenite (with compact gypsum). Phelps. 



170, 171, 172 G-ypsEOTJs makl (with selenite). Springport, Cayuga. 



173 Limestone above gypsum beds. Jamesville, Onondaga. 



174 Gypseous marl (with nodules of gypsum). South of Chittenango. 

 175, 176 Compact gypseous mael. 



177 Gravel cemented by gypsum. Boring at Salina, Onondaga. 



178 Gypseous shale. 



179 Compact limestone (with vesicular cavities filled with crystalline mat- 



ter). Near Lanark's mill. 



180 Compact limestone (with zinc blend^). Near Lanark's mill. 



181 Compact limestone (with irregular cavities). Near Lanark's mill. 

 182, 183 Hydraulic limestone (with lignilites). Near Lanark's mill. 

 184 Hydraulic limestone (with obscure fossils). Byron, Genesee. 

 185, 186 Hydraulic libiestone (with cherty nodules). Near Camillus. 



187 Compact shaly limestone. Phelps, Ontario. 



188 Crystallized gypsum (deposits from the salt-vats, ten specimens). 



Syracuse, Onondaga. 



189 Calcareous formation having oolitic structure (deposits from salt- 



vats, four specimens). Syracuse. 



190 Oolite (deposits from salt-vats, three specimens). Syracuse. 



191 Calcareous mass showing oolitic and pitted structure (deposits from 



salt- vats). Syracuse. 



upper part of the onondaga-salt group continued in the wall case 



OF THE water-lime GROUP. 



1, 2, 3 Hydraulic limestone. AUen's creek. 

 4 Hydraulic limestone. Clarence-hoUow. 



