e cliffs we observed a
considerable quantity of drift-timber and some hummocks of gravel. The
spring tides do not rise above two feet. The Melville Range approaches
within three miles of the coast there, and presents a few short conical
summits, although the hills composing it are mostly round-backed.

[Sidenotes: 217, 218, 219] At Point De Witt Clinton, a compact
blackish-blue limestone, traversed by veins of calc-spar, forms a bed
thirty feet thick, which reposes on thin layers of a soft, compact,
light, bluish-gray limestone or marl. The cliffs at this place are
altogether about seventy feet high, but their bases were concealed by
accumulations of ice. Veins filled with compact and fibrous gypsum
traverse the upper limestone. Naked and barren ridges of greenstone,
much iron-shot, cross the country here, in the same manner as at Cape
Lyon. The soil consists of gravel and clay; the former mostly composed
of whitish magnesian limestone; and the vegetation is very scanty.

At Point Tinney, in lat. 69 degrees 20 minutes, cliffs of a calcareous
puddingstone, about forty feet high, extend for a mile along the coast.
The basis, in most of the beds, is calc-spar; but in some small layers
it is calcareous sand. The imbedded pebbles are smooth, vary in
magnitude, from the size of a pea to that of a man's hand, and are
mostly or entirely of chert, which approaches to calcedony, and, when
striped, to agate in its characters. Perhaps, much of the gravel which
covers the country is derived from the destruction of this conglomerate
rock.

SEA COAST.--LIMESTONE.

From Point Clifton to Cape Hearne, the whole coast consists of a
formation of limestone precisely similar to that which occurs on Lake
Winipeg and Parry's Peninsula.

Dolomite, the prevailing rock in this formation, is generally in thin
layers, and has a light smoke-gray colour, varying occasionally to
yellowish gray, and buff. Its structure is compact, with little lustre,
except from facets of disseminated calc-spar. It sometimes passes into
milk-white chert, which forms beds. In some places the dolomite
alternates with cellular limestone, which is generally much impregnated
with quartz, and has its cavities powdered with crystals of that
mineral. No organic remains were observed in the strata, but fragments,
evidently derived from some beds of the formation, contained
orthoceratites, like those of Lake Huron. The strata, though nearly
horizontal, appear to crop out