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January 1814. In 56 years June was 5 times the hottest month, July 
36 times, and August 15 times. November was twice the coldest 
month of winter, March 1^- times, February 10J times,* December 
15, and January 27 times. A classification of the years according 
to the earliness or lateness of the greatest summer heat is next 
given. 
Section Fourth contains the monthly and annual fall of rain from 
Mr Adie’s observations, viz. from 1795 to 1804, and from 1822 
to 1849. The mean annual fall is exactly 25 inches, ranging from 
36 60 in 1795 to 15 f 27 in 1826. The distribution of rain in the 
different seasons is then given, being greatest in summer and least in 
spring. 
In Section Fifth, the author has considered whether any law can 
be traced in the succession of the seasons throughout the period em- 
braced by these observations. But beyond the fact, that hot and 
cold years usually occur in groups of from 7 to 12 years’ duration, 
nothing definite can be deduced from the Tables. Conformably 
with this remark, there is a slight appearance of maximum tempera- 
tures occurring about the years 1809, 1829, and 1849; and of 
minima in 1799, 1819, 1839. 
Section Sixth is on the form of the Annual Curve of Temperature 
and its Fluctuations. Adopting the usual mode of notation by the 
sines of arcs, and making the given date reckoned from January 0 
(the extent of the year being denoted by 360°), we have for the 
temperature, y , of the given epoch x. 
2 / = 46°-88-10°-98 sin (x + 68° 28') + 0°-96 sin (2 x + 22°). 
The average temperature of each day of the year being taken for the 
40 years of Mr Adie’s observations, and being projected in a curve, 
is well represented on the whole by the preceding formula. It is 
plain, however, that even 40 years is by much too short a period to 
give with accuracy the mean temperature of any given day. The 
following Table contains the mean temperature of each day of the 
year, founded on Mr Adie’s observations. 
* When the temperature of February and March was the same, as in 1807; 
then one-half is the proportion for each. 
