658 REPORT—1899. 
thought this instrument may assist in this work by recording not only any seismic 
sea waves that may cross the Pacific, but atmospheric ones that in great volcanic 
eruptions are set up, as in the case of Krakatoa. 
It is hoped these observations, and data obtained during the coming winter, 
may not merely assist our local weather predictions, but lead to a similar investiga- 
tion upon the important seaboard of Great Britain. 
8. Report on Meteorological Observations on Ben Nevis. See 
Reports, p. 250. 
9. Report on Meteorological Photography. See Reports, p. 238. 
10. Report on the Meteorological Observatory, Montreal. See Reports, p. 65. 
1l. The Rainfall of the South-Eastern Counties of England. 
By Joun Hopkinson, FR. Met.Soc., Assoc.Inst.C.L. 
The rainfall of the south-eastern counties is here treated in the same manner as 
was that of the south-western counties at the Bristol Meeting of the Association 
last year. The counties considered as south-eastern are Oxford, Bucks, Berks, 
Herts, Middlesex, Essex, Hants, Surrey, Sussex,and Kent. They cover an area of 
9,901 square miles, which is nearly one-fifth that of England, and one-twelfth that 
of the British Isles. The mean monthly rainfall for the ten years 1881 to 1890 
at seventy stations in these counties has been computed, and the mean annual 
rainfall at ninety-nine stations, being one to the nearest 100 square miles in each 
county. Thus, for example, the mean annual rainfall of the smallest county, 
Middlesex (282 square miles), is deduced from the records of three stations, and 
that of the largest, Hampshire (1,625 square miles), from the records of sixteen 
stations. 
The monthly and annual means for each county and for the whole area at the 
seventy stations are as follows :— 
Mean Rainfall in the South-Eastern Counties of England, 1881-1890. 
| 
n n n wan n n q = a | a a 
oe = ae a6 ~8 rms ae 5 8 we ret 3 
Sa Oa Heo | Bo EtablberSucy al (EIS fe asisSs Se 
aa a 
ins ins ins. | ins ins. ins ins ins. | ins. | ins ins 
Jan 2:00 | 2:00} 1°93 | 1:90 | 1:58 | 2°33 | 2:57 | 1:95} 2:51} 2°03 | 2°14 
Feb. 1:89] 1:88 | 1°79 | 1°83) 1°55 | 2:07.) 2°07 | 1°77 ).2-23) 1°82) 1:91 
Mar 1:73 | 1°68 | 1:76 | 1:80 | 1:60 | 1°80 | 1:94 | 1°67} 2:°16| 1°81} 1°84 
April 1:78 | 1:86 | 1:80 | 1:72 | 1:55 | 1°89 | 1:80 | 1°73} 1°88{ 1°73) 1:77 
May 1:96} 2:14 | 2°14 | 2-10 | 1°80 | 2-05 | 211°) 1°98) 1:98) 1°76) 1-97 
June 2:07 | 1°82) 1:95 | 1:98 | 1:71 | 207 | 1°93 | 1°79| 1°83] 1°76] 1°86 
July .| 2:59 |°2°93 | 2:55 | 2-47 | 2:39 | 2-67 | 2 36 | 2°43] 2°70) 2°41] 2°50 
Aug, .| 1:97 | 2°05 | 1:96 | 2-16 | 2-10 2:04 | 2:05 | 1°93] 2°33) 1:97] 2:07 
Sept. .| 2°17 | 2°37] 2°20 | 2°21 | 2-20 2:24 | 2:39 | 2:20} 2°68) 2:59) 2°37 
Oct 9:54 | 2°66 | 285 | 2:57 | 2-53 | 2°60 | 3-04 | 2°58) 3°60) 3:25) 2°97 
Nov 2-75 | 2°88 | 2°85 | 2:80 | 2:57 | 2:99 | 3:34 | 2°73] 3°64) 3:03] 3:06 
Dec 2:00 | 2:19 | 2:09 | 1:92} 1:79 | 2°18 | 2°55 | 1°86} 2°65) 2°31] 2°24 
Year .| 25:45 |26:46 | 25°87 | 25:46 | 23°37 | 26:93 |28°15 |24-62 130:19 26°47 |26:72 
