Archibald Smith

Archibald Smith FRS FRSE (10 August 1813, in Greenhead, North Lanarkshire – 26 December 1872, in London) was a Scottish mathematician and lawyer.

He was the only son of James Smith, a wealthy merchant and antiquary of the Jordanhill estate, Glasgow, and his wife Mary, granddaughter of Alexander Wilson, professor of astronomy in Glasgow University. Archibald studied at Glasgow University in 1828, and then at Trinity College, Cambridge, where he was Senior Wrangler, said to be the first Scot to achieve this position, and first Smith's prizeman in 1836, elected a fellow of Trinity College. He was one of the founders of the Cambridge Mathematical Journal.

He entered Lincoln's Inn, and was called to the bar in 1841, practising as an equity draughtsman and property lawyer.

His scientific work was mainly in the field of applications of magnetism and the Earth's magnetic field. He obtained practical formulae for the correction of magnetic compass observations made on board ship, which General Sir Edward Sabine published in the Transactions of the Royal Society: Smith later made convenient tables. In 1859 he edited William Scoresby's Journal of a Voyage to Australia for Magnetical Research and gave an exact formula for the effect of the iron of a ship on the compass. In 1862, in conjunction with the hydrographer Sir Frederick John Owen Evans FRS (1815-1885), then superintendent of the compass department of the navy, he published an Admiralty Manual for ascertaining and applying the Deviations of the Compass caused by the Iron in a Ship.

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