[Accra] (16), capital and chief port in British Gold Coast colony.
[Accrington] (39), a manufacturing town 22 m. N. of Manchester.
[Accum, Friedrich], a German chemist, the first promoter of gas-lighting (1769-1838).
[Accumulator], a hydraulic press for storing up water at a high pressure; also a device for storing up electric energy.
[Acerra] (14), an ancient city 9 m. NE. of Naples; is in an unhealthy district.
[Acetic acid], the pure acid of vinegar; the salts are called acetates.
[Acetone], a highly inflammable liquid obtained generally by the dry distillation of acetates.
[Acet`ylene], a malodorous gaseous substance from the incomplete combustion of hydro-carbons.
[Achæan League], a confederation of 12 towns in the Peloponnesus, formed especially against the influence of the Macedonians.
[Achæ`ans], the common name of the Greeks in the heroic or Homeric period.