APPENDIX. 757 



from the Black Shale (Genesee Shale) (Winchell); in Michigan, from the same; 

 in parts of Ohio, western Pennsylvania, and Virginia, from Chemung sand- 

 stones, the oil of which is supposed by some to have come from the subjacent 

 Black Shale. The Subcarboniferous contains wells in the same regions as the 

 last; and there is the same query regarding the origin of the oil Tertiary 

 deposits are the source of the oil of southern California, and also of that of the 

 island of Trinidad. 



Petroleum springs have long been known on the -other continents ; and of late 

 sources have been opened in rocks of various ages over different parts of Europe. 

 The famous wells of Rangoon in India, and in the region of the Caspian, have 

 been flowing from before the Christian era, and still afford oil abundantly. The 

 wells are pits made in the superficial strata; and the supply of oil is kept up by 

 its constant exudation from the enclosing and underlying rock. They show that 

 the oil exists ready-formed in the strata, and also that such sources are some- 

 times perpetual. 



J. — Catalogue of American Localities of Fossils. 



The following catalogue of American localities of fossils contains only some 

 of the more important, and is intended for the convenience especially of the stu- 

 dent-collector. 



Localities of Fossils. 



Potsdam sandstone. — Swanton, Vt. ; Braintree, Mass.; Keeseville (at " High 

 Bridge"), Alexandria, N.Y. ; Chiques Ridge, Pa. ; Falls of St. Croix, Osceola 

 Mills, Trempaleau, Wisconsin; Lansing, Iowa; St. Ann's, Isle Perrot, C.W. ; near 

 Beauharnois on Lake St. Louis, C.E. 



Calciferous. — Point Levi, Mingan Islands, Philipsburg, and near Beauharnois, 

 C.E. ; Grand Trunk Railway between Brockville and Preseott, St. Ann's, Isle 

 Perrot, C.W. ; Amsterdam, Fort Plain, Canajoharie, Chazy, Lafargeville, Ogdens- 

 burgh, N.Y. 



Chazy limestone. — Chazy, Galway, Westport, N.Y.; Island of Montreal, C.E., 

 1 to 3 miles north of " the Mountain." 



Bird's-eye limestone. — Amsterdam, Little Falls, Fort Plain, Adams, Water- 

 town, N.Y. 



Black River limestone. — Watertown, N.Y. ; Ottawa, C.W. ; Island of Mon- 

 treal, and near Quebec, C.E. 



Trenton limestone. — Adams, Watertown, Boonville, Turin, Jacksonburgh, Little 

 Falls, Lowville, Middleville, Fort Plain, Trenton Falls, N.Y.; Pine Grove, Aarons- 

 burg, Potter's Fort, Milligan's Cove, Pa. ; Highgate Springs, Vt. ; Montmorency 

 Falls and Beauport Quarries near Quebec, Island of Montreal (quarries N. of 

 the city), C.E. ; Ottawa. Belleville, Trenton (G. T. R. R., W. of Kingston), C.W. ; 

 Copper Bay, Mich. : Elkader Mills, Turkey River, Dubuque, Iowa ; Falls of St. 

 Anthony, St. Paul. Mineral Point, Cassville, Beloit, Quimby's Mills near Benton, 

 Wis. ; Warren, Illinois. 



Utica slate. — Turin, Martinsburgh, Lorraine, Worth, Utica r Cold Spring, 

 Oxtungo and Osquago Creeks near Fort Plain, Mohawk, Rouse's Point, N.Y.j 

 Rideau River along R. R. at Ottawa, bed of river two miles above, C.W. 



Hudson River group. — Pulaski, Rome, Lorraine, and Boonville, N.Y. ; Penn's 

 Valley, Milligan's Cove, Pa.; Oxford, Cincinnati, 0.; Madison, Ind. ; Anticosti, 

 opposite Three Rivers, C.E. ; Weston on the Huniber River, nine miles W. of 

 Toronto, C.W. ; Little Makoqueta River, Iowa; Savannah, Green Bay, Wis.: 

 Scales Mound, 111. ; Drummond's Island, Mich. 



Medina sandstone. — Lockport, Lewiston, Medina, Rochester, N.Y. ; Long Nar- 

 rows below Lewi -town, Pa. 



