Owing to a confident reliance upon other means of determining the vessel's place, some merchantmen, and many whalemen, especially when cruising, wholly neglect to heave the log; though at the same time, and frequently more for form's sake than anything else, regularly putting down upon the customary slate the course steered by the ship, as well as the presumed average rate of progression every hour.
The town has some industry in bobbin-making, and there are slate quarries in the neighbourhood.
There is some roofing slate along the Rogue river, natural cement, nickel ore, bismuth and wolframite in Douglas county, gypsum in Baker county, fire-clay in Clatsop county, borate of soda on the marsh lands of Harney county, infusorial earth and tripoli in the valley of the Deschutes river, chromate of iron in Curry and Douglas counties, molybdenite in Union county, bauxite in Clackamas county, borate of lime in Curry county, manganese ore in Columbia county, and asbestos in several of the southern and eastern counties.
The industries of the Lake District include slate quarrying and some lead and zinc mining, and weaving, bobbin-making and pencil-making.
Slate quarries are very numerous throughout the Principality, the finest quality of slate being obtained in the neighbourhood of Bangor and Carnarvon, where the Penrhyn and Bethesda quarries give employment to many thousands of workmen.
The industries of the town include manufactures of cotton, silk, earthenware, machinery and tobacco, with brass and iron founding; while slate and stone are quarried, and there are coal, iron and lead mines in the neighbourhood.
On a mission to ensure there was a clean slate between his mate and Darkyn, Gabriel waited in the middle of Deidre's old apartment for the Dark One to arrive.
Industries include slate quarrying, shipbuilding, iron and brass foundries, alum, vitriol, manure, guano and tobacco works.
The Inner Hebrides are much more scattered and principally include Skye, Small Isles (Canna, Sanday, Rum, Eigg and Muck), Coll, Tyree, Lismore, Mull, Ulva, Staffa, Iona, Kerrera, the Slate Islands (Seil, Easdale, Luing, Shuna, Torsay), Colonsay, Oronsay, Scarba, Jura, Islay and Gigha.
With the exception of the counties of Orkney, Shetland, Caithness, Sutherland and Inverness, granite is quarried in every shire in Scotland, but the industry predominates in Aberdeenshire, and is of considerable importance in Kirkcudbrightshire; limestone is quarried in half of the counties, but especially in Midlothian and Fife; large quantities of paving-stones are exported from Caithness and Forfarshire, and there are extensive slate quarries at Ballachulish and other places in Argyllshire, which furnishes three-fourths of the total supply.