ON THE RAINFALL OF THE BRITISH ISLES. 99 



ceptable in others, such as distance from the sea and from lofty hills, as 

 well as their direction, <kc. 



The Committee wiU also be glad of any suggestions as to the conduct of 

 rainfall work, and of information resjjecting any stations or old observations 

 not included in the list published by them in 1866, and of which I shall be 

 happy to send you a copy if you have not already received one. 



Yours veiy truly, 



G. J. Stmoks, Secretary, 



[Illustration of mode of filling up return.] 



POSITION AND PARTICULARS OF THE RAIN-GAUGE 



At [Camden Square, London,] 

 In the County of [Middlesex.] 



Year in which observations were first made [1858.] 



Hour of observation [9 a.m.] If entered against the day of observation, or 



the one preceding [Preceding]. 

 Position [In garden, 120 ft. by 24 ft.] 

 Surrounding objects, their distances and heights : 



N. [WaU 



N.E. [House 



E. [WaU 



S.E. [Wall 



S. [WaU 



S.W. [Summer House 



W. [Raspberry-bushes 



N.W.[WaU 



Inclination of ground [Quite level, but in 



Height of Ground above sea-level [111] ft. as determined by [Levelling from 

 Ordnance Bench-mark]. 



Height of top of gauge above ground [0] ft. [6] in. 



Pattern of gauge. (If similar to any on plate, quote the number ; if not, 

 give sketch.) [Sinular to No. X., but the bent tube is made straight, 

 and a jar inserted for the purpose of ensuring more accurate mea- 

 surement.] 



Have the same gauge and measuring-glass been used throughout ? [No.] 



Has the gauge always been in the same position ? [No.] 



[ the previous position [300 yards further west.] 



If not, state briefly ■< the reason for the alteration [Growth of trees.] 

 [ the supposed effect [None perceptible.] 



Remarks. 

 [Measuring- glass broken in 1861, and a new tested one obtained, the 

 rainfaU of each day until its arrival being bottled separately, and mea- 

 sured by the new glass.] Signed, [G. J. SYMONS.] 



Another branch of investigation which has been arrested by the same 

 cause is the relative amount of rain falling in different months, or, as we have 

 usually termed it, the " monthly percentage of mean annual rainfaU." Several 

 articles upon the subject have appeared in our previous Reports ; and last 

 year we pointed out that the observations for the decade 1860-69 offered 

 data of completeness unparalleled, either in this or any other country, tho 



h2 



