RAINFALL IN HERTFORDSHIRE IN 1890 . 
183 
Fall. 
1st quarter. 5°70 
Difl. 
+ 0-07 
— 1-00 
Winter 
Fall. 
3-83 
Diff. 
—2*17 
2nd" „ . 5-01 
Spring . 
5-03 
—0-49 
3rd „ .. 7-26 
— 005 
Summer ., 
9-08 
+ 2-10 
4th „ .. 4-42 
—3-06 
Autumn .. 
4-45 
—3*48 
February, September, and December were very 
dry; 
July was 
the only very wet month. The difference 
mean for the half-century was :— 
in each 
month from the 
Jan. —f -0 * 18 April. 
.... —0-69 
July. 
-bl-82 
Oct. 
. —1-43 
Feb. ..... —0-93 May . 
.... —0-62 
Aug. 
—0-03 
Nov. 
. — 0-21 
Mar. ..... -f 0-82 June ., 
.... -f0-31 
Sept. 
—1-84 
Dec. 
. —1-42 
Thus the fall up to the end of July was more than an inch above 
the mean, but for the last five months in the year nearly five inches 
below the mean, an average defect of an inch per month. 
The absolute minimum fall in any one day in each month, and 
the station recording it, 
was: 
Jan. 26—Moor Park . 
. 0-48 
July 17—Moor Park . 
4-19 
Feb. 15—Cheshunt College 
. 0-72 
Ang. 
19—Kensworth.... 
1-20 
Mar. 19—Welwyn. 
. 1-05 
Sept. 
23—Rothamsted . 
0-61 
April 15—Southgate . 
A. 0-43 
Oct. 
7—Throcking. 
0-64 
May 10 —Royston... 
. 0-60 
Nov. 
6 —Moor Park. 
0-82 
June 4—St. Albans. 
. 0-98 
Dec. 
18—Cheshunt College. 
0-34 
The wettest day in each month at the 30 stations was : 
January 24th at 1 station, 25th at 1 , 26th at 3, 27th at 24, 26th and 27th 
equal at 1 . 
February 14th at 21 , 15th at 9. 
March 19th at 29, 24th at 1 . 
April 15th at 20, 21st at 1, 25th at 3, 26th at 5, 15th and 26th equal at 1. 
May 9th at 25, 10 th at 4, 15th at 1 . 
June 4th at 1 , 10 th at 3, 12 th at 8 , 30th at 17, 10 th and 30th equal at 1 . 
July 17th at all stations. 
August 10 th at 12 , 11 th at 4, 19th at 13, 28th at 1 . 
September 17 th at 6 , 19th at 3, 21 st at 11 , 23rd at 8 , 17th and 23rd equal at 
1, 17th and 25th equal at 1. 
October 7th at all stations. 
November 4th at 5, 6 th at 22 , 23rd at 3. 
December 4th at 2 , 18th at 21 , 19th at 5, 27th at 1 , 18th and 19th equal 
at 1 . 
The day in each month on which a heavy fall of rain was most 
general over the county was therefore : 
Jan. 27th. April 15th. July 17th. Oct. 7th. 
Feb. 14th. May 9th. Aug. 19th. Nov. 6 th. 
Mar. 19th. June 30th. Sept. 21 st. Dec. 18th. 
The number of wet days in the year (average of the 30 gauges) 
was 164, being 4 below the mean of the 20 years 1870-89. Of the 
total number there were 35 (or 21 %) in the winter months, 41 (or 
25 %) in the spring, 52 (or 32 °/ 0 ) in the summer, and 36 (or 
22 °/ 0 ) in the autumn. 
The number of wet days in each month, and the deviation from 
the mean of the previous 20 years, was as follows : 
Jan. ... 
... 20 +5 
April., 
.... 14 -t-1 
July .. 
... 18 +4 
Oct. ... 
.. 11 —4 
Feb. .. 
... 7 —7 
May . 
.... 12 —1 
Aug. .. 
... 17 +4 
Nov. ... 
... 19 43 
Mar. .. 
... 15 4-2 
June . 
. 17 +4 
Sept. .. 
... 6 —7 
Dec. ... 
... 8 —8 
