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ESHER, WILLIAM BALIOL BRETT, IST VISCOUNT (18171899), English lawyer and master of the rolls, was a son of the Rev. Joseph G. Brett, of Chelsea, and was born on the i3th of August 1817. He was educated at Westminster and at Caius College, Cambridge. Called to ...

ESKER (O. Irish eiscir), a local name for long mounds of glacial gravel frequently met with in Ireland. Eskers (the Swedish dsar) are among the occasionally puzzling relics of the British glacial period. They wind from side to side across glaciated country and

ETHER, (CjHs^O, the Aether of pharmacy, a colourless, volatile, highly inflammable liquid, of specific gravity o- 736 at o°, boiling-point 35° C., and freezing-point n7°'4 C. (K. Olszewski). It has a strong and characteristic odour, and a hot sweetish taste, i

ETHERS, in organic chemistry, compounds of the general formula R-O-R', where R, R' = alkyl or aryl groups. They may be regarded as the anhydrides of the alcohols, being formed by elimination of one molecule of water from two molecules of the alcohols; those in

TESTER (Fr. tetiere, head-covering, from t&te), anything placed horizontally over the head, as the sound-board of a pulpit, the flat boards over an old-fashioned bed, &c.