Encyclopedist, born near Aberdour, in Aberdeenshire, of humble parentage; graduated at Aberdeen, and became a schoolmaster at Tillydesk, and afterwards held the post of head-master of Gordon's Hospital in Aberdeen; in 1853 joined the staff of Messrs. W. & R. Chambers, Edinburgh, and became eventually editor of the first edition of their encyclopedia (1861-1868); amongst other work done for the Messrs. Chambers were various manuals on astronomy, geography, etc.; was a man of wide and accurate scholarship (1810-1877).