Charles Button, an English mathematician, born in Newcastle-on-Tyne, Aug. 14, 1737, died Jan. 27, 1823. At the age of 18 he became an usher in the village of Jesmond, and some years later the master of the school. In 1760 he removed to Newcastle, where he wrote his "Practical Treatise on Arithmetic and Book-Keeping" (1764). His "Treatise on Mensuration " (1771), and " Principles of Bridges, and the Mathematical Demonstration of the Laws of Arches" (1772), led to his being chosen in 1773 professor of mathematics in the military academy of Woolwich. He was elected fellow of the royal society in 1774, and was foreign secretary of that body from 1779 to 1783, when he resigned. He published a large number of papers in its "Transactions," and made all the mathematical calculations for Maskelyne's experiments for determining the mean density of the earth. About 1795 he undertook, aided by Drs. Pearson and Shaw, the labor of abridging the " Philosophical Transactions." The work was completed in 1809, Hut-ton receiving £6,000 for his share in it.

Being compelled by bad health to resign his professorship at Woolwich, he received a retiring pension of £500. His principal works, in addition to those above mentioned, are: "Tables of the Product and Powers of Numbers " (London, 1781); "Mathematical Tables" (1785); "Course of Mathematics" (3 vols., 1793); and "Mathematical and Philosophical Dictionary" (2 vols. 4to, 1795). He was also for many years editor of the "Ladies' Diary."