1911 Encyclopædia Britannica/Lotto

LOTTO (Ital. for “lot”), a gambling game usually called Keno in America, played by any number of persons upon large boards or cards, each of which is divided into three horizontal rows of nine spaces, four spaces in each row being left blank and the other five marked with numbers up to 90. Each card is designated by a general number. The cards usually lie on the gambling-table, and a player may buy from the bank as many as he cares to use, each card being registered or pegged on an exposed table as soon as bought. Ninety small ivory markers, generally balls flattened on one side, numbered from 1 to 90, are placed in a bag and shaken out one by one, or, more usually, in a so-called keno-goose, a kind of urn with a spout through which the balls are allowed to roll by means of a spring. When a number falls out, the banker, or keno-roller, calls it out distinctly, and each player upon whose card that number occurs places a mark over it. This is repeated until one player has all the numbers in one row of his card covered, upon which he calls out “Keno !” and wins all the money staked excepting a percentage to the bank.