Note 37 — APPENDIX.
Reading edition
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.
150 Compact, white limestone, which, when examined with a lens, appears to be entirely composed of madrepores.
151 Specimens of limestone, having a crystalline texture, a brownish colour and slaty structure.
152 The seams are dark, as if from the carbonaceous matter—portions of this bed have the appearance of old mortar; but contain obscure madrepores.
From the middle of the ramparts.
153 Fine-granular limestone, having a pale, wood-brown colour, and a splintery fracture. It resembles the limestone of the hill at the mouth of Bear Lake River.
154 Pale yellowish-brown limestone, with a dull fracture, but interspersed with small, shining, sparry plates, and traversed by concretions of calc-spar, that appear to have originated in corallines.
155 Yellowish-gray limestone, passing into a soft marl slate.
156 Some beds contain a shell, which Mr. Sowerby refers, though with doubt, to the species named terebratula sphæroidalis, a fossil of the cornbrash. The substance of the shells is preserved.
Some of the specimens contain producti, and fragments of the coral named amplexus.
Lower end of the ramparts.
157 Fine-grained limestone, of a dark-brown colour, containing some small, round, smooth balls of dark limestone—occurs in horizontal strata.
158 Brownish-black flinty-slate, which forms a layer an inch thick, and covers the horizontal beds of limestone last mentioned. (157.)