1911 Encyclopædia Britannica/Bog
BOG (from Ir. and Gael, bogach, bog, soft), a tract of soft, spongy, water-logged ground, composed of vegetation, chiefly mosses, in various stages of decomposition. This vegetable matter when partially decomposed forms the substance known as “peat” (q.v.). When the accumulation of water is rapidly increased by excessive rainfall, there is a danger of a “bog-slide,” or “bog-burst,” which may obliterate the neighbouring cultivated land with a deposit of the contents of the bog. Destructive bog-slides have occurred in Ireland, such as that of the Knocknageeha Bog, Rathmore, Kerry, in 1896, at Castlerea, Roscommon, 1901, and at Kilmore, Galway, 1909.
There is a French game of cards called “bog,” said to be of Italian origin, played with a piquet pack on a table with six divisions, one of which is known by the name of the game and forms the pool. It was fashionable during the Second Empire.