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XXVII. 
METEOROLOGICAL OBSERVATIONS TAKEN IN HERTFORDSHIRE 
IN THE YEAR 1904. 
By John Hopkinson, E.L.S., E.G.S., Y.P. B. Met. Soc., 
Assoc. Inst. C. E. 
Bead at Watford , 29 th March , 1905. 
Meteorological observations continue to be taken in Hertford¬ 
shire at the same stations as they have been for some years. The 
hour of observation is 9 a.m. All the records relate to the day of 
observation except those of the maximum temperature and the 
rainfall, which are entered to the previous day. Shade tempera¬ 
tures only are given; those for Bennington, Berkhamsted, and 
St. Albans being from thermometers in Stevenson screens, and those 
for Hew Barnet from thermometers under a Glaisher stand. 
Information as to the stations has been given in my paper on 
“ The Climate of Hertfordshire ” in the previous volume of our 
‘ Transactions ’ (pp. 125-126). The averages with which the 
results are compared are those for the twelve years 1887-1898 as 
there given, except for the rainfall, which is compared with the 
average for the sixty years 1840-1899 (p. 132 of same paper). 
Table I .—Results of Climatological Observations taken in 
Hertfordshire in the Year 1904. 
1 
Temperature of the Air 
0 
1 
Rain 
Stations 
Means 
Extremes 
‘3 
0 
% 
£3 
33 
CD 
Mean 
Min. 
Max. 
Range 
Min. 
Max. 
s 
H 
JO 
O 
3 
C 
c 3 
fi 
Bennington . 
48-4 
O 
41-2 
O 
557 
O 
14-3 
O 
19-8 
O 
86 6 
% 
82 
7*4 
ins. 
21-85 
213 
Berkhamsted. 
48-3 
40 6 
56-1 
15 5 
I 7-5 
85-9 
83 
7-2 
24-48 
i 75 
St. Albans. 
48*5 
4 i 3 
55-6 
14*3 
20 3 
86-8 
82 
r 2 
25-42 
182 
New Barnet . 
49 '6 
41 -I 
58-1 
170 
197 
91-0 
82 
67 
22-48 
167 
County. 
487 
41 'O 
567 
■ 5-3 1 
i 7*5 
91-0 
82 
7-1 
23*56 
184 
The year 1904 was rather warm, the mean temperature being 
0 o, 4 above the average. The mean daily range was small, being 
0 o, 6 less than the average, owing entirely to the warmth of the 
nights. The air, at 9 a.m., was of average humidity. The sky, 
at the same hour, was rather more cloudy than usual, there was 
about the usual number of sunless days, and the sun shone brightly 
for about its average duration. The rainfall was rather small, 
being about two and a half inches below the average, but there 
were more wet days than usual. 
VOL. XII.—PART VI. 
15 
