598 Proceedings of the Royal Physical Society. 
chiefly from the west, and strong in force from the 3rd to 
the 17th. The mean temperature was the highest since 
1882. 
April.—Unusually fine weather was experienced during 
the greater part of the month, the first 12 days being rainless. 
On the 15th a wet period extending over a week set in, 
an inch and a half of rain falling. In spite of the fact that 
pressure remained high and steady, no sunshine was recorded 
from the 16th to 18th. During the last ten days only 
0°15 inch of rain fell, while sunshine was abundant although 
easterly winds prevailed. Temperature was again much 
above the average, the month being the warmest April for 
23 years. Barometric pressure was higher than in any April 
for at least 40 years, values not being at present available for 
comparison prior to 1853. 
May.—During the greater part of the month both pressure 
and temperature were high, but sunshine was comparatively 
small in amount, being 26 hours less than in April, in spite 
of the longer days. The rainfall was small, more than two- 
thirds of the total being recorded on the 17th, 20th, and 28th. 
The winds were light, and about equally divided between east 
and west, the cloudy conditions accompanying the easterly 
winds off the North Sea being responsible for the comparative 
deficiency of sunshine. Temperature was much in excess of 
the average, being the highest since 1848. Thunderstorms 
occurred on the 19th, 20th, and 21st; while lightning, 
without thunder, was seen on the 28th. 
June.—The first three weeks of June were very fine, rain 
being virtually absent, less than + of an inch being recorded 
during this period. Temperature was very high from the 
16th to the 19th, the average maximum readings for these 
days being 80°°5; while on the 18th the temperature rose to 
85°'9, or within 2° of the highest ever registered in Edinburgh. 
On the 22nd and 23rd heavy rain fell, with a N.N.E. wind, 
the fall for the 48 hours amounting to 1:9 inch. - During the 
last week pressure was low, little sunshine being recorded. 
The average hourly air movement for the month was only 
2°6 miles, the wind never rising above a moderate breeze. 
This was the fourth month in succession with a temperature 
