38. Poa _alpina_, L.--Hook. Fl. Bor. Am. ii. p. 246.
_Described by JAMES TENNANT, ESQ., Professor of Mineralogy in King's College, London._
NEAR POINT HARGRAVE, 67° 25' N. 87° 35' W.
Mica-slate, with indistinct crystals of precious Garnets.
ISTHMUS connecting Ross's Peninsula with the Continent.
SIMPSON'S PENINSULA, 68° 1/3' N. 88° 20' W.
A HILL on the western shore of Halkett's Inlet, 69° 14' N. 90° 50' W.
Cellular Quartz, coloured by oxide of Iron.
HELEN ISLAND, one of the Harrison Group in Pelly Bay, 68° 54' N. 89° 52' W.
Gneiss; the Felspar, Mica, and Quartz distinctly stratified.
Gneiss; the Felspar red and greatly predominating.
BEACON HILL, near Fort Hope, 66° 32' N. 86° 56' W.
Ditto, with a small quantity of Mica; the Felspar red, and constituting four-fifths of the mass.
Gneiss, with veins of red Felspar running diagonally to the stratification.
Ditto, the Felspar red and greatly predominating.
Quartz, coloured by oxide of Iron, and containing minute particles of Gold.
MELVILLE PENINSULA, 68° 27' N. 85° 24' W.
Granite, the Felspar greatly predominating.
ISLAND near the north point of Rankin's Inlet.
Quartz, enclosing chlorite and Copper Pyrites.
Carbonate and silicate of Copper, with Copper Pyrites on argillaceous slate.
Ditto, with a thin coating of green carbonate of Copper.
Ditto, with very thin veins of Calcareous Spar running diagonally in stratification.
ISLAND near the south point of Rankin's Inlet.
Quartz and Iron Pyrites; the latter crystallized in cubes, the faces of which are not above one-sixteenth of an inch.
Quartz, with Iron Pyrites, and superficially coloured by oxide of Iron.
_Dip of the needle and force of magnetic attraction at various stations along the west shore of Hudson's Bay, and at Fort Hope, Repulse Bay._