Il6 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [BuU. 



Sand, formation — Dana, 63. 



Sandstone, action of humus acid — Julien, 175. 



age of Connecticut — Agassiz, i ; Akerly, 3 ; Dana, 75 ; Hitch- 

 cock, 138, 146; Jackson, 173; Lyell, 194; Lyman, 195; Marcou, 



198, 199; Mather, 213; Rice and Gregory, 243a; Russell, 249, 



253; Whitney and Silliman, 297. 

 bowlders — Dobson, 104. 

 brown and red — Lindsley, 187. 

 building stone — Merrill, 218. 

 color — Dana, 68; Russell, 252. 

 comparison of, to Old Red of England — 302. 

 conditions of accumulation — Davis, 83, 98; Rice and Gregory, 



243a. 

 Connecticut valley — 302; Dana, 46, 55, 68; Davis, 82, 83, 84, 



85, 86, 89, 92, 93, 98; Deane, loi ; Hitchcock, 132, 146; Hunt, 



171; Marcou, 198; Rice and Gregory, 243a; Silliman, 266; 



Smith, 279; Whelpley, 296. 

 Liassic age — Whitney and Silliman, 297. 

 Longmeadow — Wells, 291. 

 maps — Dana, 517; Davis, 519, 525, 526, 527; Davis and Whittle, 



530; Hitchcock, 544; Hobbs, 551; Lyman, 569; Rice, 582; 



Rice and Gregory, 582a. 

 New Haven — Silliman, 260, 262. 

 New Red — Dana, 25, 55; Hitchcock, 138; Lyman, 195; Marcou, 



199; Silliman, 267, 268, 275, 277. 

 Oriskany — Hall, 127. 

 Pomperaug valley — Hobbs, 155. 

 Portland — Johnston, 174; Merrill, 217. 

 production — 282. 

 relation to Triassic trap — Dana, 57, 71, T2, 72,, 74; Davis, 78, 



79, 82, 83, 84, 87, 92, 93, 98; Davis and Whittle. 100; Rice 



and Gregory, 243a. 

 Rocky Hill — Lyell. 194. 

 stratification — Wells. 292. 

 Tariffville — Rice, 241. 

 Triassic, of Palisade ranges — Dana, 34. 

 Wallingford — • Chapin, 13. 

 Woodbury — Hitchcock, 137. 

 See also Triassic. 

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

 magnetic declination- — Gannett, 121. 

 molybdena — Silliman, 263. 

 Scantic river, former course — Kiimmel, 183. 

 Scapolite, Salisbury — Lee, 185. 



Trumbull — Hobbs, 156. 

 Scapolite rocks — Hitchcock, 138. 

 Schist, Berkshire — Rice and Gregory, 243a. 

 Bolton — Rice and Gregory, 243a. 

 Brimfield — Rice and Gregory, 243a. 

 description — Hitchcock, 131; Rice and Gregory, 243a. 

 Hartland — Rice and Gregory, 243a. 

 Hoosac — Emerson, 112. 

 Milford chlorite — Rice and Gregory, 243a. 

 northwestern Connecticut — Dana, 53, 61. 

 Plainfield quartz — Rice and Gregory, 243a. 

 Scotland — Rice and Gregory, 243a. 

 Taconic — Dana, 35> 40, 43- 47, 48, 49, S3, 59, 65; Emmons, 115; 



Walcott, 286, 287. 



