The Occlusion of Gases by Metals

Abstract

PRESIDING at the meeting of the Faraday Society in November last, at which the subject of the occlusion of gases by metals was discussed, Sir Robert Hadfield delivered an introductory address, which is about to be published by the society with an account of the discussion. It appears from the bibliography attached to this address that Thomas Graham was one tif the first to investigate this subject. His results were published in the Philosophical Transactions of the Royal Society in 1867, the title of the paper being "The Occlusion of Gases by Meteoric Iron."The particular specimen investigated contained go'g per cent, of iron, 8-45 per cent, of nickel, and a small quantity of cobalt. It was free from any stony admixture, and was remarkably pure and malleable. A strip cut from this with a clean chisel was first well washed with a hot solution of potash, then with distilled water, and afterwards dried. It was then placed in a porcelain tube which was evacuated and afterwards heated to redness in a combustion furnace.