e was appointed professor of
physics and telegraphy at the Imperial College of Engineering, Tokio. On
his return to London six years later he became professor of applied physics
at the Finsbury College of the City and Guilds of London Technical
Institute, and in 1884 he was chosen professor of electrical engineering at
the Central Technical College, South Kensington. He published, both alone
and jointly with others, a large number of papers on physical, and in
particular electrical, subjects, and his name was especially associated,
together with that of Professor John Perry, with the invention of a long
series of electrical measuring instruments. He died in London on the 8th of
November 1908. His wife, Mrs Hertha Ayrton, whom he married in 1885,
assisted him in his researches, and became known for her scientific work on
the electric arc and other subjects. The Royal Society awarded her one of
its Royal medals in 1906.

AYSCOUGH, SAMUEL (1745-1804), English librarian and index-maker, was born
at Nottingham in 1745. His father, a printer and stationer, having ruined
himself by speculation, Samuel Ayscough left Nottingham for London, where
he obtained an engagement in the cataloguing department of the British
Museum. In 1782 he published a two-volume catalogue of the then undescribed
manuscripts in the museum. About 1785 he was appointed assistant librarian
at the museum, and soon afterwards took holy orders. In 1786 he published
an index to the first seventy volumes of the _Monthly Review_, and in 1796
indexed the remaining volumes. Both this index and his catalogue of the
undescribed manuscripts in the museum were private ventures. His first
official work was a third share in the British Museum catalogue of 1787,
and he subsequently catalogued the ancient rolls and charters, 16,000 in
all. In 1789 he produced the first two volumes of the index to the
_Gentleman's Magazine_, and in 1790 the first index-concordance to
Shakespeare. He was a Fellow of the Society of Antiquaries, and has been
called [v.03 p.0077] "The Prince of Indexers." He died at the British
Museum on the 30th of October 1804.

AYSCUE (erroneously ASKEW or AYSCOUGH), SIR GEORGE (d. 1671), British
admiral, came of an old Lincolnshire family. Beyond the fact that he was
knighted by Charles I., nothing is known of his career until in 1646 he
received a naval command. Through the latter years of the first civil war,
Ayscue seems to have acted as one of the sen