|====================================================================| | METEOROLOGICAL OBSERVATIONS, made at SPRING-MILL, | | 13 miles NNW of Philadelphia. Result of the year 1787. | |====================================================================| | | THERMOMETER. | BAROMETER. | PREVAILING | | | of | de | | WIND. | | MONTH. |_Fahrenheit_,| _Reaumur_, | mean height | | | | mean degree |degrés moyens| | | | | D. 1/16 O | D. 1/10 O |in. pts. 1/16| | |----------+-------------+-------------+-------------+---------------| |January | 35 1 | 1 4 | 29 9 9 |Variable still | |February | 33 8 | 8 | 29 9 9 |NE | |March | 45 1 | 5 8 | 29 9 7 |W | |April | 54 3 | 9 9 | 29 9 6 |Still, SW | |May | 61 2 | 13 | 29 9 2 |Still, WSW | |June | 70 7 | 17 2 | 29 8 2 |WNW | |July | 72 2 | 17 9 | 29 9 10 |WWSW var. | |August | 74 5 | 18 9 | 29 10 6 |W | |September | 64 7 | 14 5 | 29 10 4 |WNW | |October | 51 1 | 8 5 | 29 11 9 |WNW vari. | |November | 45 1 | 5 8 | 29 11 1 |Still, vari. | |December | 34 | 9 | 29 7 7 |WNW | |----------+-------------+-------------+-------------+---------------| | |10 Feb. |10 Feb. D. du| 8 Mar. | | | RESULT. |greatest D. |plus. gr. | greatest | | | |of cold. |froid. | elevation. | | | | 5 | 12 0 | 30 10 | | | |-------------+-------------+-------------| | | |3 July |3 July plus |2 Febr. least| WNW | | |greatest D. |G. D. de |elevation. | | | |of heat. |chaud. | | | | | 96 1 | 28 5 | 29 | | | |-------------+-------------+-------------| | | |Variation. | Variation. |Variation. | | | | 91 1 | 40 5 | 1 10 | | |----------|-------------+-------------+-------------|---------------| | |Temperature. |Temperature. |Mean elevat. | | | | 53 5 | 9 6 | 20 9 9 | | |====================================================================| | MONTH. | DAYS of | WATER | WEATHER. Key for left | | | [Key | of RAIN | A=aur. bor. |