198 Proceedings of the Royal Physical Society. 
was unequally partitioned between the day and night, the 
mean of the maxima being 5°-4 above the average, while the 
average of the minima exceeded the normal by 3°°8. The 
weather during the last week was phenomenally warm, the 
maximum noted on the 25th, viz., 78°°3, being absolutely 
the highest recorded so late in the season during at least 
the last 55 years, In 1868 the thermometer rose on the 
6th of the month to 81°:7, while in 1891 a reading of 79°'8 
was recorded on the 12th, these being the only warmer 
September days noted during over half a century. Westerly 
winds were greatly in excess of their normal frequency, 
while calms were also considerably above the average. 
October.—Taken as a whole, this month was cold and 
ungenial, the mean temperature being 3° below the average, 
and no less than 14°4 below the mean of September. The 
greatest fall in the mean temperature of the two months 
previously observed was 12°:2, in 1843. The first 3 weeks 
were comparatively mild and rainy, but the 10 days ending 
with the 30th were exceptionally cold, their mean tem- 
perature being 38°°3. Snow showers fell on the 24th, 25th, 
26th, and 28th, there being about 2 inches on the ground on 
the morning of the 28th. The greatest number of days 
with snow previously observed in October since 1764 was 
three, in 1782 and 1819, although individual snowstorms 
have yielded a greater depth. 
November.—November was mild, wet, and stormy, with a 
total absence of anything approaching wintry weather; the 
thermometer in the Stevenson’s screen never falling below 
33°°3. This was the highest minimum observed during any 
of the last 55 Novembers. There was a great deficiency 
of sunshine, barely half the average being recorded. An 
unusual feature was the comparative prevalence of Polar 
winds, but unaccompanied by the depression of temperature 
with which they are usually associated. A very fine aurora 
was observed on the evening of the 9th. 
December.—Little sunshine was recorded, there being a 
total of only 18 hours, or 8 per cent. of the total possible, 
this being no less than 11 per cent. below the average. 
Temperature was below the normal, the days being two 
