. History of Beaver County, Pennsylvania and its centennial celebration,. 1781-82 were excessivelycold, but the beginning of February ushered in a very mild 1 The winter of 1903-04 was very remarkable. From the latter part of Novemberuntil March the cold, was constant, with heavy snows. For several weeks the temperaturefrequently fell below zero, the ordinary cheap mercury thermometers registering in theBeaver valley as low as 10, 15, 20, and even 26 degrees below. At Pittsburg there wereno such low temperatures reported, the lowest for the winter being, according to the reportof the United St
. History of Beaver County, Pennsylvania and its centennial celebration,. 1781-82 were excessivelycold, but the beginning of February ushered in a very mild 1 The winter of 1903-04 was very remarkable. From the latter part of Novemberuntil March the cold, was constant, with heavy snows. For several weeks the temperaturefrequently fell below zero, the ordinary cheap mercury thermometers registering in theBeaver valley as low as 10, 15, 20, and even 26 degrees below. At Pittsburg there wereno such low temperatures reported, the lowest for the winter being, according to the reportof the United States Weather Bureau, 5 degrees below on February 16th. The greatdifference thus shown is partly accounted for, perhaps, by the fact that the cheap mercurythermometers generally in use are not reliable, and may also be due in part to there havingreally been higher temperatures at Pittsburg on the same days owing to the overhangingclouds of smoke there and the retention of heat in the great buildings surrounding the pointof observation. 8 Penna. Arch., vol. xii., p.
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