38 
J. HOPKINSON-REPORT ON THE 
July 16, Rosebank, Berkhamsted, 1-14 in. ; August 3, Apsley 
Mills, 0-96 in.; Sept. 27, Moor Park, Rickmansworth, 0-55 in.; 
Oct. 4, Frogmore, "Watford, 0*72 in. ; Nov. 6, Pendley Manor and 
Cowroast, Tring, 0*52 in. ; Dec. 30, Pendley Manor, 1*01 in. 
The day in each month on which a heavy fall of rain was most 
general over the county was—Jan. 6, Feb. 15, March 18, April 3, 
May 22, June 1, July 27, August 3, Sept. 27, Oct. 29, Nov. 24, 
Dec. 30 ; and in the year, Dec. 30. 
The average number of wet days in each month was as follows:— 
Jan., 21 ; Feb., 17 ; March, 11 ; April, 13 ; May, 11 ; June, 16; 
July, 8 ; August, 14; Sept., 7 ; Oct., 17 ; Nov., 21; Dec., 21. 
The deviation from the mean for the 30 years 1870-99 was— 
Jan., + 6 ; Feb., + 4; March, — 2 ; April = ; May, — 1 ; 
June, -f- 4; July, — 6; August, =; Sept., — 6; Oct., + 1; 
Nov., -j- 5 ; Dec., + 5. 
Taele III.—Supplementary to Tables I anb II. 
Gauge. 
p 
Station. 
Observer. 
Dia¬ 
meter. 
Height 
above 
Sea. 
Bain- 
fall. 
Days. 
1. 
Odsey (2nd gauge). 
Tring—Elm House . 
H. G. Fordham. 
ins. 
5 
feet. 
256/F 
ins. 
22-67 
184 
4 . 
E. J. Le Quesne. 
5 
460 
28-01 
183 
7 . 
Cliipperfield . 
A. W. Eivington 
5 
407 T 
23-57 
11 7 
8. 
Harpenden— Botkamsted 
Watford—St. Albans Ed. 
iLawes Agri- | 
8 
420 T 
27-10 
169 
,, 
j cultural Trust) 
72 X 87 
420T 
29-34 
186 
10. 
H. Euddle. 
5 
240 
22*84 
125 
12. 
Welwyn—Danesbury . 
A. M. Blake. 
5 
400 
26-70 
172 
14 . 
Hamels Park. 
E. Wallis. 
5 
400 T 
24-51 
138 
17 . 
Hertford . 
W. B. Bryan . 
8 
119 
21-93 
165 
Distribution of the Rainfall throughout the County .—The following 
table (Table IY, p. 39) gives the mean fall in each month and in 
the year in each of the five river-districts represented, and in the 
two main hydrographical divisions of the county, the catchment- 
basins of the Great Ouse and of the Thames, and also the difference 
in the year from the mean for the 20 years 1880-99. 
The mean fall in each of the minor river-basins or sub-districts 
represented was as follows:—( Cam) Rhee, 22-89 ins.; (Jvel) Dpper 
Ivel, 25*24 ins.; Hiz, 24'49ins.; {Thame) Upper Thame, 30*92ins.; 
{Colne) Bulbourne, 28-61 ins. ; Gade, 29-76ins. ; Yer, 27'49ins.; 
Upper Colne, 26-74 ins.; Lower Colne, 26-99 ins.; {Lea) Mimram, 
24*33 ins.; Beane, 23-87 ins.; Rib, 24 53 ins.; Ash, 24-06 ins.; 
Stort, 26-50 ins.; Upper Lea, 22-88 ins.; Lower Lea, 23-94 ins. 
A peculiar feature of the distribution of the rainfall is brought 
out by the above. In eight months of the year the heaviest falls 
were in a small area between Tring, Great Gaddesden, and Hemel 
Hempstead; for three of those months at Pendley Manor, and for 
three at Apsley Mills. The rainfall exceeded one inch on six 
