No. 8.] BIBLIOGRAPHY OF CONNECTICUT GEOLOGY. II5 



Rocks, character and age — Hitchcock, 133. 



characters used in defining — Dana, 45. 



classification — Merrill, 218. 



decay — Silliman, 268. 



list in Connecticut — Cochrane, 17. 



metamorphic — Rice and Gregory, 243a. 



origin of bedding in metamorphic — Dana, 62. 



origin of crystalline — Hunt, 168. 



syenitic and hornblendic — Mather, 209. 



unconsolidated materials — Percival, 229. 



water capacity — Gregory, 124a. 

 Rocks of the chloritic formation on the western border of the New 



Haven region — Hawes, 129. 

 Rocky Hill, foot-prints — Hitchcock, 139, 144. 



indurated bitumen in trap — Dana, 44. 



trap — Davis, 98; Rice and Gregory, 243a; Silliman, 272. 

 Rogers, H. D., Cause of crescent- formed dikes of trap — Rogers, 247. 



Nature of dip of Triassic of the eastern United States — Rogers, 

 246. 



Sketch of the geology of the United States — ■ Rogers, 248. 

 Round Hill, till ridge — Dana, 64; Davis, 81. 

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



iron — Putnam, 235. 

 Russell, I. C, Former extent of Triassic formation in the United States 

 — Russell, 251. 



Newark system — Russell, 253. 



Occurrence of a solid hydrocarbon in eruptive rocks — Russell, 

 250. 



Physical history of Triassic formation — Dana, 46 ; Russell, 249. 



Subaerial decay of rocks, and origin of red color of certain 

 formations — Dana, 68; Russell, 252. 



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

 Salisbury, brown hematite — Eckel, 108. 



description — Silliman, 265. 



ending of synclinal in Taconic range — Dana, 59. 



geological structure — Hobbs, 151. 



geology and mineralogy — Lee, 185; Percival, 229; Rice and 

 Gregory, 243a. 



ice caves — Kimball, 179 ; Silliman, 270. 



iron — Dewey, 203; Eckel, 108; Hitchcock, 137, 138; Shepard, 



257- 

 maps — Dana, 509, 514; Hobbs, 548, 549; Logan, 566; Petros, 



579; Pynchon, 581. 

 moving rocks — Lee, 186 ; Petros, 232. 

 schorl — Lee, 185. 

 skeletons — Lee, 185. 

 slate — Dana, 2,1 \ Lee, 185. 

 Taconic range — Dana, 59; Hobbs, 150. 

 talc — Lee, 185. 

 titanium — Lee, 185. 

 tourmaline — Lee, 185. 

 Saltonstall, excursion — Dana, 71. 



maps — Dana, 504, 512; Davis, 527, 531; Hovey, 565. 



trap — Dana, 71; Davis, 98, 100; Hovey, 162; Rice and Gregory, 



243a. 



