14 
Greatest excess of open air temperature over shade temperature, 65°2 
degs., 25th June. 
Greatest difference between lowest temperature in shade and on ground, 
22-4 degs., 9th June. 
Greatest rainfall on any one day, 1°480 in., 11th November. 
Latest early Summer frost, 0°6 degs., 12th May. 
Earliest Autumn frost, 0-2 degs., 1oth October. 
Severe gales, 27th January, 26th August, and 6th and gth October. 
A series of thunderstorms on 27th, 28th, and 29th January; 21st, 26th, 
27th, and 28th July; also on 1oth and 26th August, and Ist October. 
Greatest number of consecutive days on which rain fell, 9, 1—9th March, 
and 20th—28th July. 
Greatest number of consecutive days on which no rain fell, 15; 11th to 
25th May. 
Sunniest day of the year, 13°75 hours, on 24th May, being 87 per cent. 
of the greatest possible amount. 
More bright sunshine in the afternoons, averaging fully half-an-hour on 
each day of bright sunshine. 
Welsh Hills at 9 a.m.—These were only visible on 85 days, a little less 
than one-fourth of the year; 54 days clearly and 31 very clearly 
seen. 
EXPLANATIONS. 
Local Mean Time is used for the regular observations. 
The Barometer readings, taken at 9-0 a.m. and g-O p.m., are corrected 
and reduced to sea-level and 32-0° Far. 
The Approximate Mean Temperature is the mean of the maximum and 
minimum read at 9-0 a.m., and found by multiplying their difference by the 
Meteorological Office co-efficient, and adding the product to the minimum. 
Temperature in Sun read at 9-0 a.m. and placed to previous day. 
Ground Temperatures read twice daily at 9-0 a.m. and 9-0 p.m. The 
lowest reading for the 24 hours, prior to 9-0 a.m., is entered to the previous day. 
Underground Temperatures taken daily at 9-0 a.m. The air tempera- 
ture is given for purposes of comparison. 
The Relative Humidity is calculated by dividing the mean elastic force 
of Aqueous Vapour, at the temperature of the Dew Point (as determined by 
Glaisher’s Factors), by that corresponding to the temperature of the air 
(z.e. the Dry-bulb reading). 
The Rain is measured at 9-0 a.m., and the amount entered to the 
previous day. A fall of 0-006 inch and above constitutes a day of rain. 
‘When any snow falls, the day is counted as a day of snow. 
When the mean of the 9-0 a,m. and 9-0 p.m. observations of the amount 
of cloud is less than 2'0, it is called a day of clear sky; if the mean is above 
8-o an overcast day. 
The wind direction is taken by means of a Compass Nephoscope, from 
the drift of the lower clouds. 
When the Force of the Wind is 7 and above {on Beaufort’s Scale o—12), 
it is accounted a Gale. 
Ozone read at 9-0 a.m. (according to Dr. Moffat’s Scale o—12), and 
placed to previous day. 
Sunshine Record.—The photographic traces are fixed before being 
measured. 
Fog, &c.—The fog, haze, &c., are made from the visibility of objects 
and lights at definite distances from Rutland Cottage. 
