148 DESCRIPTIONS OF MINERALS. 
Stone, and Christian counties, are in the ‘‘ Keokuk lime- 
stone,” of the Subcarboniferous period, but partly in Web- 
ster, Taney, Christian, and Barry counties, in the Lower 
Silurian ‘‘magnesian limestone ;” those of Central Mis- 
sourl, situated in Moniteau, Cole, Miller, Morgan, and other 
counties, are mostly in the Lower Silurian ‘ magnesian 
limestone,” but partly, as in Northern Moniteau, in the Sub- 
carboniferous. The conditions in which the ore occurs in 
Missouri confirms the opinion of Prof. Whitney, as to there 
being no true veins. Mr. Adolf Schmidt, in his account of 
the Missouri lead ores, says that the deposits contain red 
clay, broken chert, from the chert bed, and portions of the 
limestone beds, along with the lead ; that the barite was in- 
troduced after the lead ; that some caves are filled through 
all their ramifications, while others are only partly filled ; 
and he adds that the same solvent waters that made the caves 
and horizontal fissures or openings may have held the vari- 
ous minerals in solution. In Derbyshire, England, the de- 
posits contain fossils of Permian rocks, showing that, al- 
though occurring in Subcarboniferous limestone, they were 
much later in origin. 
Galenite also occurs in the region of Chocolate River and 
elsewhere, Lake Superior copper region ; on Thunder Bay, 
and Black Bay; at Cave-in-Rock in Illinois, along with 
fluorite; in New York at Rossie, St. Lawrence County, in 
eneiss, In a vein 3 to 4 feet wide’; near Wurtzboro’ in Sul- 
livan County, a large vein in millstone grit ; at Ancram, 
Columbia County ; Martinsburg, Lewis County, N. Y., and 
Lowville; in Maine, at Lubec ; also of less interest at Blue 
Hill Bay, Birmingham and Parscnsfield ; in New Hampshire, 
at Eaton, Bath, Tamworth and Haverhill; in Vermont, at 
Thetford ; m Massachusetts, at Southampton, Leverett, and 
Sterling, but without promise to the miner; at Newbury- 
port, Mass., in a vein which is now worked ; at Middletown, 
Ct., formerly worked as a silver-lead mine; in Virginia, in 
Wythe County, Louisa County, and elsewhere; in North 
Carolina, at King’s Mine, Davidson County, where the lead 
appears to be abundant; in Tennessee, ab Brown’s Creek, 
and at Haysboro’, near Nashville; in Pennsylvania, at 
Phoenixville ; in Michipicoton and Spar Islands, Lake Supe- 
rior. In Nevada it is abundant on Watkins River, and at 
Steamboat Springs, Galena district ; in Colorado, at Pike’s 
Peak, etc.; in Arizona, in the Patagonian Mts., Santa Rita 
