90 CONNECTICUT GF.OL. AND NAT. HIST, SURVEY. [BuU, 



limestone — Dana, 37; Hobbs, 150, 151. 



limestone quarries — Ries, 244. 



map — Pynchon, 581. 



marble — Newberry, 220. ' 



mica schist — Dana, 2)7 • 



minerals — Brace, 9. 



mines — Pynchon, 238. 



pseudomorphs — Hobbs, 149. 



quartzite — Dana, 35, yj '■, Walcott, 288. 



stratified rocks — Dana, 62. 



tremolite — Hitchcock, 137. 



wedging action of intruding material — Dana, (A. 

 Canterbury, geology — Percival, 229; Rice and Gregory, 243a. 

 Canterbury granite-gneiss — Rice and Gregory, 243a. 

 Canton, geology — Percival, 229; Rice and Gregory, 243a. 

 Castle Rock, glacial action — Hobbs, 158. 

 Cat Hole peaks, trap sheets — Davis, 100. 

 Catopterus gracilis. Little Falls — Davis, "j"]. 

 Cement, Southington — Lowrey, 191. 

 Centerville, map — Dana. 513. 

 Chalcedony, Berlin — Percival, 228. 

 Chalcopyrite, Trumbull — Hobbs, 156. 

 Chalybeate springs, Litchfield — Pierce, 233. 

 Chamberlin, Second glacial epoch — Dana, 60. 

 Champlain period, Connecticut valley — Dana, 58. 

 Chapin, A. B., Junction of trap and sandstone at Wallingford — Chapin, 



Chapin, J. H., Hanging Hills — Chapin, 14. 



Topographic survey of Connecticut — Chapin, 16. 

 Trap ridges, Meriden — Chapin, 15. 

 Chapinville, mines — Putnam, 235. 



Chaplin, geology — Percival, 229 ; Rice and Gregory, 243a. 

 Chatfield, mines — Putnam, 235. 

 Chatham, coal — Hitchcock, 136. 

 cobalt — Loomis, 188. 



geology — Percival, 229; Rice and Gregory, 243a. 

 Chauncy peak, map — Davis, 523, 529, 531. 



trap sheets — Davis, 100; Rice and Gregory, 243a. 

 Chemical analyses, anorthite — Hawes, 130. 



basalt, Meriden — Pratt, 282 (1898-99); Middlefield — Pratt 

 (Gregory, U. S. G. S., Bull. 165, p. 176) ; Plainville — Souther, 

 282 (1898-99); Saltonstall — Hawes, 128; South Durham — 

 Hawes, 128. 

 Branchville minerals •— Brush and Dana, 11. 

 clay — Loughlin, 190; Ries, 245. 

 diabase, West Rock — Dana, 21; Hawes, 128; Wintergreen 



lake — Hawee, 128. 

 feldspar — Hawes, 130. 

 granite, Millstone point, Stonv Creek — Kemp, 177; Waterford — 



282 (1898-99). 

 keratophyre. Fair Haven — Hovey, 163. 

 limestone, Canaan — 282 (1898-99); Fairfield — 282 ( 1 889-90) ; 



Ries, 244. 

 olivine, Pine hill, South Britain — Hobbs, 155. 

 sandstone, Cromwell, Portland — 282 (1896-97, iS98-99)- 

 tachylite, Meriden — Emerson, iii. 



trap — Dana, 21; Hawes. 128, 129; Pratt, 282; Souther, 282 

 (1898-99). 



