METEOROLOGY.
The mean temperature of the air at Greenwich during the registration year was 49.4° F., the average of 35 years being 49.3°. The averages of the four quarters were 41.6°, 53.5°, 60.6°, and 41.8°. The hottest week was that which ended on the 11th of July, mean temperature 66.8°; and the coldest week was that ended on the 2nd of January, 1875, mean temperature 28.8°. The highest reading of the thermometer was on the 9th of July, 92.0°, and the lowest on the first day of the current year 18.2°. The dryness of the atmosphere (i.e., the difference between the dew point temperature and air temperature) was 5.6 (average in 30 years 5.5.) The rainfall was 24.1 inches.