TAKEN AT WANSFORD HOUSE, WATFORD, 1884. 
223 
1‘n the winter of 1883-84 (Dec. to Feb.) the mean pressure of 
the atmosphere was about the average, the mean temperature was 
excessively high, and the relative humidity and rainfall were about 
the average. In the spring (March to May) the mean pressure, 
mean temperature, and relative humidity were about the average, 
and the rainfall was considerably below it. In the summer (June 
to Aug.) the mean pressure and mean temperature were high, the 
mean daily range of temperature being very great (chiefly due to 
cool nights and very hot days in August), the relative humidity was 
low (due to the dryness of the air in August), and the rainfall was 
very small. In the autumn (Sept, to Nov.) the mean pressure was 
very high, the mean temperature rather high, the relative humidity 
rather low, and the rainfall, as in summer, very small. 
Difference in 1883-84 from means of 1877-82, at Watford. 
Seasons, 
1883 - 84 . 
Pressure. 
Temperature. 
Tension 
of 
Vapour. 
Humi¬ 
dity. 
Rainfall. 
Cloud 
0-10. 
Mean. 
Daily 
Range. 
Total. 
Days. 
Winter . 
Spring . 
Summer. 
Autumn. 
ins. 
-f-*020 
— *038 
+ •088 
+'I 57 
O 
+ 4*8 
+0*1 
+2*4 
+ 1*2 
O 
—i*3 
+o*8 
+ 4-1 
-l-o*6 
in. 
+•033 
— •003 
*+”■024 
— *001 
1 1 1 
ins. 
—i’54 
—2*62 
— 4*25 
—4*16 
±5 
— 16 
—11 
—0*2 
-l-o*8 
—i*i 
—o*6 
The following notes record the general character of the weather 
in each month, and its principal changes. 
January. —Excessively mild, rather dull, with a humid atmo¬ 
sphere of nearly average pressure, and with a considerable amount 
of rain. This was the mildest January for many years, the mean 
and also the absolute minimum temperature being excessively high. 
The minimum was in fact below 32° on 1 day only (1st), while 
in February the number was 5, in March 6, and in April 6. The 
maximum was above 42° on the very large number of 29 days, the 
two days on which it was not so being the 1st (37°*5) and the 27th 
(41°*0), and on 4 days it was above 52°. For ten days (12th to 
21st) no rain fell, and during this period barometric pressure was 
very high, the mean being 30*544 ins., and the range from 30*380 
to 30*668. Before this period 0*68 in. of rain fell, and after it 
2*22 ins. During this latter (wet) period there were gales of wind, 
with snow and hail (26th), and barometric pressure was very low, 
the mean from 23rd to 31st being 29*612 ins., and the following 
pressures occurring on 26th and 27th :—26th, 9 a.m. 29*279, 7 p.m. 
28*531, 9 p.m. 28*589, 11 p.m. 28*670 ; 27th, 9 a.m. 29*093. 
February. —Very mild, rather bright and windy, with an atmo¬ 
sphere of average pressure and humidity, and with a small amount 
of rain. There was nothing in the weather of this month, except 
its warm temperature, which calls for special remark, and in this 
15 
VOL. III.—PART VI. 
