47 
least for the minima in June (6*3") and most in Febrnary (18'7“), 
the latter thus being three-fold the former. February has the 
lowest mean minimum of any month, 20 7° in ’55. The highest 
for January, February, and March are just below 40°; for 
December it is 38’5° (1862). The lowest summer mean mini¬ 
mum is 48’6° for July, 1844; the highest, 56'6° for August, 
1870. The mean of the monthly mean minima for the 50 
years, ranges from 32T8° in January, to 52’06° in July. 
December is 33°, February, 384)2°. August is 51 ’86°, or ’2° below 
July; but June is only 49‘19°. The greatest change is from 
May to June (6-26°), and from September to October (5’93°). Maxima. 
For the max. thermo., the least range is 10‘6° in August ; 
the most, 15 0° in May, and 14’8° in December, or a difference 
only of 4 as much again instead of 3-fold. This agrees with 
the extremes, which, for minima yaried 341° in January, to 
9° in July, and, for the maxima, from 23° in Februaiy, and 
20 |° in August, to 13° in October. 
The 50 years’ mean of the means for the whole year are Yearly means. 
54‘39° and 41'02°. The maxima range from 51‘6° in 1879, 
to 57'1° in ’46 ; the minima from 38*0° in ’55 to 43‘5° in 1871. 
A combination of tlie means of the max. and min. temperatures 
give a 50 years’ mean of -17'72°, ranging from 44‘4° in 1855, to 
50'0° in 1846. 
Taking the separate months, January gives 36*9°, July combined 
^ ^ J ft J monthly means. 
60‘1°, or a variation of 23'2° from winter to summer. But the 
extreme means, 25 9° in February ’55, and 64 9° in June ’46, 
give a possible difference of 39°. 
It should be noted that the month of lowest mean min. 
(February, 1855), is later, and the month of highest mean max. of highest max. 
(June, 1846), earlier than the mean. The greatest range (mean 
of max. and min.) is in February, from the •above 25 9° up to 
44’2° in ’69, or a range of 18'3°. In July it is onl}^ 7’7°, from 
57° in ’58 to 64'7" in ’47*. Means of 63° or abo\ e occurred in Hot months. 
June, 1846, (64'9 ), and 1869 ; July 1846, ’47, ’52 (65 0°) ’65, 
’68, ’69, ’76, ’87 ; August 1846,’70 (64 3°), ’84. In September 
1864 it reached 60'9°. 1846, when all three months exceeded 
63°, gave the hottest summer. 
The means were at or below 32° in January of 1842, ’50, ’67, Coid months. 
* February, 1855, was cold almost beyond comparison with any other month in 
any year. The next coldest February was warmer. 
