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IX. 
METEOROLOGICAL OBSERVATIONS TAKEN IN HERTFORDSHIRE 
IN THE YEAR 1900. 
By John Hopkinson, F.L.S., F.G.S., F.R.Met.Soc., Assoc.Inst. C.E. 
The only alteration which has taken place in the meteorological 
stations of Hertfordshire is the removal, on the last day of February, 
1900, of the author’s meteorological instruments from his residence, 
The Grange, St. Albans, to the Hertfordshire County Museum, 
a distance of one-eighth of a mile to the north-west and nine feet 
higher above sea-level. The thermometer-screen and rain-gauge 
are well exposed, being a sufficient distance from the Museum, 
and having an amply extensive clear space around them in every 
direction. The observations are taken by the caretaker of the 
Museum, Mr. Polman, under the supervision of the former observer, 
by whom the instruments have been presented to the County in 
the hope that a permanent Meteorological Observatory may thus 
be established. 
All the observations have been taken as usual. The hour of 
observation is 9 a.m., and all the records are entered to the same 
day, except those of the maximum temperature and the rainfall, 
which are entered to the previous day. At Bennington, Berkham- 
sted, and St. Albans the shade-temperature thermometers are in 
Stevenson screens, in accordance with the regulations of the Royal 
Meteorological Society; at New Barnet they are under Glaisher 
stands. 
Table I. — Results of Climatological Observations taken in 
Hertfordshire in the Tear 1900. 
Stations 
Temperature of the Air 
Humidity 
! Cloud, 0-10 
Rain 
Means 
Extremes 
Amount 
oS 
Q 
Mean 
Min. 
Max. 
Range 
Min. 
Max. 
O 
o 
0 
0 
0 
0 
% 
ins. 
Bennington . 
49’3 
42 ’O 
567 
147 
I 3 ' 1 
90-1 
81 
7*2 
23*30 
197 
Berkhamsted. 
49’3 
41 '4 
57‘3 
15 9 
11*0 
89*9 
82 
6-9 
28-91 
186 
St. Albans. 
49*3 
42‘2 
5b-4 
I 4'2 
i 6*6 
89-6 
81 
6-5 
27-50 
194 
New Barnet .... 
49'4 
39 ‘6 
59 ‘ 2 
196 
9-0 
93’9 
81 
6 "o 
24-82 
162 
County. 
49’3 
4i’3 
57’4 
i6‘i 
9-0 
93*9 
81 
6-6 
26-13 
185 
The year 1900 was nearly as warm as the previous year, the 
mean temperature being a degree above the average of that of the 
twelve years 1887-98. The mean daily range of temperature was 
about the average, both days and nights being warmer than usual. 
5 
VOL. XI.—PART III. 
