The temperature of the air on the west is seldom so hot, or so cold, as on the east side of the mountain. By comparing the state of a thermometer examined by Dr. Bedford at Pittsburg, 284 miles from Philadelphia, it appears that the weather was not so cold by twelve degrees in that town, as it was in Philadelphia, on the 5th of February, 1788. To show the difference between the weather at Spring-Mill and in Pittsburg, I shall here sub-join an account of it, in both places, the first taken by Mr. Legeaux, and the other by Doctor Bedford. +----------------------------------------------------------+ | METEOROLOGICAL OBSERVATIONS, made at SPRING-MILL, | | 13 miles NNW. of Philadelphia. April, 1788. | +-------+------------------------+-------------+-----------+ | | | | | | | | | | | | | | | | | | | | | | THERMOMETER | | | | |-------------+----------| BAROMETER. | | | | of | de | | | | |_Fahrenheit_,|_Reaumur_,| mean | | | D. | mean | degrés | height | | | of the| degree | moyens | |PREVAILING | | month.| D. 1/10 O | D. 1/10 O|in. pts. 1/10| WIND. | +-------+-------------+--------+-+-------------+-----------+ | 1 | 58 1 | | 11 6 | | 29 10 5 |W. | | 2 | 46 9 | | 6 9 | | 30 1 |Calm. | | 3 | 40 3 | | 3 7 | | 30 3 |Changeable.| | 4 | 51 3 | | 8 6 | | 29 11 7 |SW. | | 5 | 51 1 | | 8 5 | | 30 7 |E. | | 6 | 55 7 | | 10 5 | | 29 11 7 |Calm. | | 7 | 51 3 | | 8 6 | | 30 2 |NE. | | 8 | 42 1 | | 4 5 | | 29 11 |E. | | 9 | 63 5 | | 14 | | 29 8 |W. | | 10 | 46 7 | | 6 5 | | 29 10 |W. | | 11 | 53 8 | | 9 7 | | 30 2 |W. | | 12 | 44 5 | | 5 5 | | 29 10 |Calm. | | 13 | 60 5 | | 12 7 | | 29 10 3 |SW. | | 14 | 50 2 | | 8 1 | | 29 9 |E. | | 15 | 58 1 | | 11 6 | | 29 9 7 |SW. | +-------+----- --+---+-- -----+-+-------------+-----------+ | METEOROLOGICAL OBSERVATIONS, made at PITTSBURG, | | 284 miles west of Philadelphia. April, 1788. | +-------+---------+---+--------+-+-------------+-----------+ | 1 | 46 | | | | |SW. |