ROCKS. 45 



Names. Associated fossils, aiid localities. 



73 Limestone (with dogtooth spar). Lockport. 



74 do (with pearl spar). Lockport. 



7o do (with geode of dogtooth spar). Lockport. 



76 Sulphate of strontian. Lockport. 



77 Limestone (with pearl spar and dogtooth spar). Lockport. 



78 do (with geode of pearl spar with selenite). Rochester. 



79 Anhydrous g-ypsum. Lcickport. 



80 Sulphate of strontian. Lockport. 



81, 82 Limestone (with pearl spar). Lockport. 



83 Limestone (with geod^ filled with bituminous coal). Lockport. 



84 do (with dogtooth spar). Lockport. 



85 do (with pearl spar and dogtooth spar). Lpckport. 

 86, 87 do (with dogtooth spar). Lockport. 



88 Pearl spar (a geode). Lockport. 



89 Pearl spar and dogtooth spar. Lockport. 



90 Pearl spar (rose^colored). Jiockport. 



91 Limestone (with rose-colored pearl spar and dqgtooth spar). Lockport. 



92 do (with dpgtooth spar and sulphate of strontian). Lockport. 



93 do (with dogtooth spar). Lockport. 



94 Peael spar ii^ gepde of limestone. Lockport. 



95 Dogtooth spae. Lockport. 



96 Dogtooth spar and pearl spar (replacing Astrocerium venustum). 



Lockport. 



97 Brown spar. Lockport. 



98 Limestone (w}th Euomphalus hemispherica). Lockport, 



99 Conceetionaey limestone. North of Manchester. 



100 Limestone (with concretionary nodes upon surface). Niagara falls. 



101 GrEODE (with pearl spar and crystals of sulphate of strontian). First 



excavation of Erie canal, 1825. Lockport. 



102 Limestone (a concretion). Near Skonondoa, Oneida. 



103 Dark bituminous limestone. Between Lenox basin and Canastota. 



104 Limestone (with cavity showing lamina of growth of Astrocerium 



venustum). Rochester. 



105 Compact limestone (with Cytherina). Jlam's quarry, Cayuga, 



