208 
METEOROLOGICAL OBSERVATIONS IE - 1877. 
Notes on the months of January and February are given in my 
report on the year ending 28th February,^ and on the months 6f 
March to August in my report for the half-year ending 31st 
August.f In the following notes on the months of September to 
December, the two principal meteorological elements, temperature 
and rainfall, will alone he alluded to. 
September. —At the commencement of the month the weather 
became cooler and drier than it had been in August, and it con¬ 
tinued so with the exception of one warm period of seven days, 
9th to 15th, of which the mean temperature was 58° - 6, being 5°*7 
above the mean of the month. After 20th it became cooler than 
before. Of the small rainfall, 0’74 in. fell during the first half, 
and O'11 in. during the last half of the month, and of this only 
0 - 01 in. fell after 18th (on 23rd), no more falling until 7th October, 
there thus being a period of 18 days with only 0*01 in. of rain. 
October.— The colder weather which commenced on 21st Sept, 
continued during the month, with the exception of three rather 
warm days, 13th (mean 53°*2), 14th (mean 55°*7), and 22nd 
(mean 55*4). There was one very cold day, 18th (mean 35 0, 4) 
with min. 9 o, 0 below freezing-point, and the min. was below 32° 
on 4 other days. Of the rainfall, 0-39 in. fell up to 21st, and 
1*52 in. from 22nd. The only days without rain for the last 10 
days of the month were 26th and 31st. 
November.— The weather was but little colder than during the 
previous month, until the last week (24th to 30th), the mean of 
which was 41 o, 0, being 2°*4 below the mean of the month. There 
was one very warm day, 16th (mean 53°*5). The min. was below 
32° on 9 days. The weather was wet throughout the month, the 
only period of more than one day without rain being 16th to 18th. 
During the first half of the month 1*84 in. of rain fell, and during 
the last half 2*38 ins. 
December.— For the first nine days the weather was rather 
warmer than during the last week in November, the mean temper¬ 
ature for this period being 41 0, 7. It then became colder, and 
continued so with the exception of 12th (mean 43°'8), 17th (mean 
44°*5), 22nd (mean 44 o, 0) and 30th (mean 47 o, 0). The only 
very cold period was 25th to 28th, the mean of which was 32°-4, 
being 7 0, 4 below the mean of the month. The min. was below 
32° on 13 days. The rainfall was distributed equably over the 
month; there were two periods of 3 days, two of 2 days, and 
three of 1 day without rain. The max., 0”62 in. on 28th, was 
partly snow and partly rain. 
* ‘ Trans. Watford Nat. Hist. Soc.,’ Yol. I, p. 117. 
f 13., Yol. II, p. 91. 
