The “Spinel” ruby is scarlet; the “Balas,” of a faint pink. The “Oriental” ruby alone has the “pigeon’s blood” hue. _Localities of sundry “Fossils.”_ (Name of Fossil.) (Proper locality.) { Galerites Albogalerus } Found in the Upper Chalk, and, Echini { Ananchytes Ovatus } occasionally, in the Greensand. { Cor Anguinum } Ammonite The Lias. Alcyonite } Troglodyte } The Chalk. Choanite } Ventriculite } Ichthyolite The Old Red Sandstone. Cray-fish The Gault. Shark’s teeth The Tertiary Strata. [Illustration: Plate I. Fig. 1. Fig. 2.] [Illustration: Plate II. Fig. 1. Fig. 2.] [Illustration: Plate III. Fig. 1. Fig. 2.] [Illustration: Plate IV. Fig. 1. Fig. 2.] [Illustration: Plate V. Fig. 1. Fig. 2.] [Illustration: Plate VI. Fig. 1. Fig. 2.] [Illustration: Plate VII. Fig. 1. Fig. 2.] GENERAL INDEX. (_Alphabetically arranged._) Acalephæ, 167 Actinia (_passim_). Agate (_passim_). Alcyonite (_passim_). Alumina, 6 Amber, 15 Amethyst, 8 Ammonite, 19 Aquamarine, 33 Asbestos, 121 Balas (ruby), 184 Beryl, 8 Bitumen, 184 Bloodstone, 43 Boron, 183 Bort, 24 Cairngorum, 36 Calc-spar, 184 Carbon, 112 Chalcedony (_passim_). Chalk (_passim_). Choanite (_passim_). Chrysolite, 8 Clay, 9 Coal, 10 Coal-tar, 24 Cockle, 3 Corundum, 24 Cray-fish, 21 Crystal, 33 Delessite, 87, 183 Diamond, 112 Echinus, 19 Emerald, 8 Emery, 24 Felspar, 9 Flint (_passim_). Fluorine, 183 Fossils (_passim_). Garnet, 183 Gault, 19 Gems (_passim_). Glucina, 183 Gold, 157 Granite, 5 Graphite, 184 Greensand (_passim_). Hyacinth, 8 Ice, 110 Icthyolite, 127 Iron, 11 Jargoon, 8 Jasper (_passim_). Jet, 15 Kaolin, 8 Lava, 181 Lias, 181 Lignite, 184 Limestone (_passim_). Magnesia, 183 Manganese, 183 Meerschaum, 183 Mocha-stone, 38 Molluskite, 95 Moss-agate (_passim_). Onyx, 8 Oolite, 181 Opal, 8 Oxygen (_passim_). Pearl, 8 Pebble (_passim_). Pecten Jacobæa, 171 Pholas Dactylus, 95 Pumice, 181 Pyrope, 183 Quartz (_passim_). Razor-shell, 3 Rhizostoma, 167 Rock-crystal (_passim_). Rock-milk, 174 Rock-salt, 155 Rotten-stone, 26 Ruby, 8 Salt, 155 Sand (_passim_). Sapphire, 8 Sardonyx, 8 Saurians, 14 Seaweed (_passim_). Sharks’ tooth, 21 Silicon, 152 Spar (_passim_). Spinel (ruby), 184 Steel, 129 Sulphur, 183