In the English House of Commons, this officer, always a member, is elected by the house on the assembling of every new parliament. When the house is in committee on bills introduced by the government, or in committee of ways and means, or supply, or in committee to consider preliminary resolutions, it is his duty to preside; he sits, not in the speaker's chair, but at the table in the seat of the clerk of the house. On divisions, when the numbers happen to be equal, he gives the casting vote (q. v.), but in committees he never otherwise votes. In August, 1853, it was, by a resolution of the house, decided that during the unavoidable absence of the speaker, this officer should preside in his stead, being only so appointed, however, from day to day. (See 18 and 19 Vict. c. 84.) In the House of Lords the chairman of committees of the whole house is elected by the house every session; he usually holds in addition the office of deputy speaker of the House of Lords. Dod. Parl. Comp. CHALDRON, CHALDERN, or CHALDER.-Twelve sacks of coals, each holding three bushels, weighing about a ton and a half. In Wales they reckon twelve barrels or pitchers a ton or chaldron, and 29 cwt. of 120 Ibs, to the ton.-Wharton. Bouvier says the chaldron equals in capacity "fifty-eight and twothirds cubic feet nearly."