[36]Mackenzie attempted to ascend this hill, but was compelled to desist by clouds of musquitoes, (July 6th, 1789. Voyage to the Arctic Sea, p. 40.)
136 This limestone effervesces strongly with acids, breaks into irregular fragments, but with an imperfect slaty structure, and has a brown colour, with considerable lustre in the cross fracture.
The specimens collected by Captain Franklin were as follows:—
144a Sandstone of an ash-gray colour, composed of rounded grains of semi-transparent quartz of various sizes, imbedded in a considerable proportion of a powdery basis which effervesces with acids. This bed weathers readily.
145 Thick-slaty sandstone passing into slate-clay, having a very fine-grained earthy fracture, and a light bluish-gray colour. It is very similar to some of the softer sandstones that occur in the coal field at Edinburgh, particularly in the Calton Hill.
146 Sectile ash-gray slate-clay which forms the partings of the beds.
144b Bluish-gray marl, impregnated with quartz, forming a moderately hard stone, and containing corallines (amplexus.)
[37]Upper part of the ramparts.
148 A fine-granular, foliated limestone, of a white colour, having large patches stained yellowish-brown, apparently by bitumen.
149 A yellowish-gray slightly granular limestone, with disseminated calc-spar.