176 NOTES ON METEOEOLOGICAL OBSERVATIONS AT PLtMOUTH. 



Taking tlie fifteen years 1870 — 1884 as before^ and summing the 

 values N.E. and E., S.E. and S., S.W. and W., N.W. and N., given 

 in the *' Challenger '^ Reports, for Falmouth at 8 a.m., we get the 

 following : 



These sums for the year for Plymouth are in close agreement with 

 those for the longer period, and we observe, as compared with 

 Falmouth, a considerable average of calms, and excess of north- 

 easterly winds, which again point to the influence of high land as 

 hinted in the temperature curve. 



Eainfall. 



The rainfall of Plymouth is an element the discussion of which 

 raises many problems of the greatest interest, on account of its 



