An historical and philosophical account of the barometer, or weather-glass : Wherein the reason and use of that instrument, the theory of the atmosphere, and the causes of its different gravitation, are assign'd and explain'd. And a modest attempt from thence made towards a rational account and probable judgment of the weather / By Edward Saul, A.M. late fellow of Magdalen-College, Oxford, and rector of Harlaxton, Lincolnshire