228 Transactions of the South African Philosophical Society. 



together with the greatest fall in one day, and the number of daily 



falls of assigned quantity : — 





Average. 



Greatest 



Fall 



in one 



Day. 



Number of Falls in 21 Years. 





Monthly 

 Fall. 



No. of 

 R. Days. 



Fall per 

 R. Day. 



Less than 

 0'5 inch. 



0-5 to 

 1-0 inch. 



Greater 



than 

 1-0 inch. 



Feb 



Mar. 

 April , 



May 



June 



Aug 



Sept. 



Oct 



Dec. 



inches. 

 2-592 

 2-206 

 2-288 

 2-311 

 1-653 

 1-112 

 •833 

 1-549 

 1-848 

 2-266 

 2-452 

 2-153 



per month 

 9-2 

 9-3 

 9-2 

 7-7 

 5-0 

 3-1 

 3-6 

 5-3 

 6-4 

 9-4 

 9-3 

 7;7 



inch. 

 •275 

 •236 

 ■249 

 •301 

 •327 

 •359 

 •230 

 •293 

 •287 

 •240 

 •264 

 •281 



inches. 

 2-07 

 1-53 

 2-13 

 3-15 

 1-88 

 2-77 

 2-10 

 3-09 

 1-90 

 2-32 

 4-27 

 4-76 



166 



173 



164 



131 



82 



50 



68 



93 



109 



169 



161 



136 



16 

 15 

 21 

 21 

 13 

 8 

 5 

 13 

 18 

 23 

 23 

 13 



11 

 8 

 8 

 9 



11 

 7 

 3 

 5 

 8 

 6 



11 



12 





23-263 



85-2 



•273 



4-76 



1,502 



189 



99 



According to the Eeport of the Meteorological Commission for 

 1891, " the rain gauge is a permanent fixture on the ridge of the 

 roof of the Port Captain's office, a tube leading from it down into his 

 office," consequently, since the average velocity of the wind at East 

 London is 20 miles an hour, we should expect the quantities of rain 

 registered to be considerably too small. Fortunately " on the east 

 side of the river, Mr. Padget, in the railway service, takes care of a 

 rain gauge ; it is well placed on a good wooden stand in the yard of 

 the maintenance department." A comparison between the annual 

 quantities registered at the two places from 1883-1903, and published 

 by the Meteorological Commission, shows great and varying diffe- 

 rences between them, not only in the quantities but in the number 

 of days reported. The average annual number of days of rain 

 reported on the East Bank is 95, and only 77 on the West Bank. 

 Only twice has the West Bank reported more days in the year 

 than the other, and on two occasions it has reported only a few more 

 than one-half. As for the annual totals, the West Bank fall varies 

 from 55 per cent, to 90 per cent, of the East Bank totals. The 

 averages for these 21 years are : — 



Inches. 



East Bank 33*27 



West Bank 23-42 



Ratio. 



Days. 



Ratio 



142 



95 



123 



100 



77 



100 



