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Cavendish(kăv`əndĭsh), pseud. of
Henry Jones,1831–99, English card game expert. Jones studied medicine, practiced in London, and retired in 1868. He became a leading authority on card games and was the first person to formulate a system of playing whistwhist,
card game for four players, those on opposite sides of the table being partners. The full pack of 52 cards is dealt. The dealer's last card is turned up to indicate trump, and after he draws this card in hand, the player on the left of the dealer leads.
..... Click the link for more information. . He was the author of Principles of Whist: Stated and Explained by "Cavendish" (1862) and later wrote books on piquet, écarté, billiards, lawn tennis, and croquet.
Henry. 1731--1810, British physicist and chemist: recognized hydrogen, determined the composition of water, and calculated the density of the earth by an experiment named after him