40 J. HOPKINSOSr EEPORT ON THE 



The mean rainfall in each, of the minor river -basins or sub- 

 districts represented was as follows : — 



ins. ins. 



Cam Rbee 20-76 . Mimram 21-97 



IvEL Hiz 21-34 ( Beane 23-05 



Thame Upper Thame 21-86 j ) Rib 2i-27 



■Bulbourne 23-62 ^^ i Ash 21-35 



/-Bui 



(Gade 23-31 f Upper Lea 20-56 



1 Ver 2502 



[Lower Colne 25-99 



^^^^^ ^ Ver 2502 \ Lower Lea 20-64 



The total yearly fall ranged from 19-79 ins. at the Red House, 

 AVare, to 28-77 ins. at Moor Park, Rickmansworth ; and the total 

 monthly fall from 0-04 in. at iS^ew Barnet in April, to 6-75 ins. at 

 Moor Park in October. The greatest fall in any one day was 

 3' 11 ins. at Moor Park on the 9th of October. 



Distribution of Rainfall in each Month. — The nomenclature used 

 in the following account of the chief falls of rain is the same as in 

 my previous reports, falls of at least ^ inch being styled consider- 

 able, f inch very considerable, 1 inch great, H inch very gi'eat, 

 l\ inch heavy, If inch very heavy, and of 2 inches and upwards 

 excessive. This analysis only applies to the 33 stations for which 

 I have retiirns of the daily rainfall. 



January. — Rainfall a little below the average, but on an un- 

 usually large number of days, nearly all for the first two or three 

 weeks in the form of snow, which was sometimes several inches 

 deep. On no day was there a considerable fall of rain recorded. 

 There was a silver thaw on the 18th. 



Febrtjary. — Rainfall very heavy, and again on a very large 

 number of days, only seven days being without a sufficient fall to 

 record. Very little on a few days only fell as snow. On 21st the 

 fall was considerable at fourteen stations, and on 26th at one 

 station. 



March. — A very chy month, with rain on very few days, nearly 

 all falling before the 5th, after which date there was a measurable 

 quantity only on two days on the average throughout the county, 

 yielding less than a tenth of an inch (exactly 0-087 in.). On no 

 day was there a considerable fall of rain recorded. 



April. — An excessively dry month, with rain on even a smaller 

 number of days than in March, at nearly all stations rain falling 

 only on 16tli, 20th, and 29th. At most stations an absolute 

 drought of thirty days terminated in the middle of this month. 

 No considerable fall of rain was recorded. 



May. — Another very dry month, with rain on very few days, 

 but not so exceptional in either respect as March or April. About 

 half the rain recorded in the month fell on the 17th, on which day 

 the fall was very considerable at three stations and considerable at 

 six. There was also a considerable fall at four stations on 29th. 



June. — The fourth very dry month in succession, and with rain 

 on very few days, nearly all falling after the 21st. At no station 

 was a considerable fall recorded. 



