Barometer

an instrument for measuring the weight of the air and the variations of its pre ure in order to determine changes in the weather, the height of mountains, and other phenomena. This most useful instrument had its origin in an experiment of Torr i cell i, an Italian, who fliourished about the middle of the 17th century Baron, in the feudal system of the Middle Ages, the title baron, derived from the Latin varo, which signifies a Iman, and, sometimes, a servant, was given, at first, to the immediate tenant of any superior. In England, baron is the lowest grade of rank in the House of Lords.