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Iron from the furnace bottom at one of the furnace

Metallurgy

before 1889

Alloy of 90 copper and 10 tin. A bronze

Metallurgy

before 1889

Luting material, "Schmier"

Metallurgy

before 1889

Mass of cast iron resembling speigeleisen unintent

Metallurgy

before 1889

Alloy of manganase and copper. Prepared and commun

Metallurgy

before 1889

Poor lead from liquating, "Armwerke"

Metallurgy

before 1889

Basic crystalline slag, very similar to the last

Metallurgy

before 1889

Yttrotantalite from Ytterby, in Sweden

Metallurgy

before 1889

Watch pivot broach, or rimer, the smallest English

Metallurgy

before 1889

Coal from Acvere River, Nelson, New Zealand, Prese

Metallurgy

before 1868

Alloy of two parts of silver and one of platinum.

Metallurgy

before 1889

Electrotype copper, melted under charcoal and left

Metallurgy

before 1889

Rich band of copper shale from Sangershausen, Saxo

Metallurgy

before 1889

Alloy of one part of lead to one of antimony

Metallurgy

before 1889

Solution of sulphide of iron in molten iron

Metallurgy

before 1889

Gold from 2,000 grains of lead forming part of a l

Metallurgy

before 1889

Sample of best rivet iron

Metallurgy

before 1889

Sulphur obtained from the roasting heaps at the Ni

Metallurgy

before 1889

Cobalt ore as imported from America, used in Evans

Metallurgy

before 1889

Auriferous copper before and after triburation

Metallurgy

before 1889

Mottled iron, Ystalyfera Iron Furnaces, Wales

Metallurgy

before 1889

Mill furnace slag showing iron olivine crystals, f

Metallurgy

1871

Mass of sandstone which has been used in a hearth

Metallurgy

before 1889

Crystallised copper from a pig of dry copper

Metallurgy

before 1889

Refinery waste slag, "Gaarkratzschlacke"

Metallurgy

before 1889

Blast-furnace calamine, or cadmia, from the Wear F

Metallurgy

before 1889

Crystals in an ore-furnace slag, at Morfa Copper W

Metallurgy

1866

Scum from the tapping pit of an ore furnace, Swans

Metallurgy

before 1889

Copper obtained from stamping native copper ore at

Metallurgy

before 1889

Molybdic acid. Partially purified. Prepared by Dr.

Metallurgy

before 1889

Result of heating together one equivalent of sulph

Metallurgy

before 1889

Black glassy slag for crushing and washing, from t

Metallurgy

before 1889

Portion of a bear? in a furnace of the Wigan Coal

Metallurgy

before 1889

Carbonaceous clay ironstone called Duffryn Brass,

Metallurgy

before 1889

Result of heating one equivalent of litharge with

Metallurgy

before 1889

Foundry-furnace-slag produced at the Royal Marienh

Metallurgy

before 1889

Alloy of 76 parts of copper and 24 of tin

Metallurgy

before 1889

Langloan pig-iron, communicated by Mr. Davis

Metallurgy

before 1889

Fragments of a half eagle coin. Analysed by R. Smi

Metallurgy

before 1889

Gold from 770 grains of lead

Metallurgy

before 1889

Light coke, from the South Staffordshire thick coa

Metallurgy

before 1889

"Arley Mine" coal, Wigan, Lancashire

Metallurgy

1843-1889

Hollow hemisphere of mild steel, manufactured at L

Metallurgy

1886

Nickel regulus, produced at Birmingham, analysed b

Metallurgy

before 1889

Refinery slag from an unknown locality

Metallurgy

before 1889

Result of an experiment on the combination of iron

Metallurgy

before 1889

Alloy of silver

Metallurgy

before 1889

Flue cinder from the reheating furnaces of Messrs.

Metallurgy

1846

Northampton iron ore, used at Dowlais Iron Works,

Metallurgy

before 1889

Piece of an old cannon ball taken out of Falmouth

Metallurgy

before 1889