Absorbing power of soils, page 353. 
Adirondack clay, comp, of, 240. 
Agricultural geology, 33. 
— relations of the Champlain 
division, 129. 
— characters of the Medina sand¬ 
stone, 143. 
— capacity of the Ontario division 
of rocks, 149. 
— — Onondaga limestone, 176. 
— — Marcellus slate, 183. 
— — Hamilton shales, 184. 
— — Catskill series, 196. 
Alumine, 227. 
Ammonia, 223. 
Analysis of the Albany clay, 260. 
— water from Albany clay, 264. 
— — from wells in ditto, 265. 
— — of Massena springs, 266. 
— Hoosic roofing slate, 246. 
— Welch slate, 246. 
— Marcellus slate, 183. 
— Hamilton shale, 184. 
— Onondaga limestone, 276. 
— Cayuga clay, 282. 
— soil of Canastota, 276. 
— — Marcellus slate, 277. 
— — Green shales, 278. 
— — from Mr. Geddes, 279. 
— — near Green lakes, 281. 
— — from Manlius centre, 281. 
— — from D. Thomas, 282. 
— — from Mr. Young, 283. 
— — Hamilton shales, 284. 
— — from Mr. Ellis, 284. 
— — Pentamerus rock, 288. 
— — Onondaga limestone, 289. 
— — Salt group, 289. 
— — near Clyde, 289. 
— — upon plaster shales, 290. 
— — of Wheatland, 290. 
| Agricultural Report.] 
Analysis of soil of Lockport, 291. 
— — from Mr. Harmon, 290. 
— — from Mr. Devereaux, 291. 
— — of Moscow, 292. 
— — from Mr. Horsford, 293. 
— — of Castile, 293. 
— — from Niagara county, 294. 
— — of Albion, 295. 
— — Genesee slate, 296. 
— — from Hoosic-falls, 334. 
— — of Hoosic, 296, 331 - 2. 
— — from Washington co. 333. 
— — from Fitch’s point, 247. 
— — of Salem, 333. 
— — Petersburgh mount. 256. 
— — of Christian-hollow, 297, 
336 - 339. 
— — Atlantic district, 319,320. 
— — from Warren county, 334. 
— — limestone, 335. 
— — of Scott, 341. 
— — red clay, 340. 
Atlantic district, 318. 
Atmosphere, 224. 
Beck’s analysis of waterlimes, 274. 
— analysis of salines, 302. 
Birdseye limestone, 122. 
Black slate, 63. 
— fossils of, 65. 
Brewster’s formula for mean tem¬ 
perature, 16. 
Brown sandstone, 83. 
Calciferous sandstone, 118. 
— mineral contents, 120. 
— range and extent, 121. 
Carbon, 223. 
Carbonic acid, 227. 
Catskill division, 187. 
Catskill group, 188. 
— dip and stratification of, 194. 
— at Gilboa, 195. 
47 
Catskill group, termination of the 
strata, 195. 
— at Jefferson, 196. 
Cauda-galli grit, 171. 
— change of structure in, 171-2. 
— extent of, 173. 
— agricultural characters, 173. 
Causes of diluvial action, 214. 
Champlain division, 115 - 117. 
Chatham, soils of, 243. 
Chazy limestone, 122. 
Chilton’s analysis of the water of 
Sharon springs, 301. 
Classification of rocks, 35. 
— of the New-York rocks, 114. 
Classification of soils, 229. 
Clays of New-York, comp, of, 357. 
Climate of the State, 11. 
— Long island, 20. 
— valley of the Hudson, 21. 
— valley of the Mohawk, 23. 
— northwest of the Mohawk, 2fi^ 
— southwest of the Mohawk, 28. 
— western part of the State, 30. 
Clinton group, 144. 
— distribution of members, 147. 
— — of soils of, 209, 213. 
— relations of, 148. 
— in Herkimer county, 143. 
Comparison of soils, 323. 
Composition of simple minerals, 39. 
— albite, 39. 
— basalt, 42. 
— greenstone, 42. 
— felspar, 39. 
— hornblende, 40. 
— hypersthene, 41. 
— mica, 40. 
— pyroxene, 40. 
— serpentine, 41. 
— soils of New-York, 235. 
