On the Winds of the Western Coast of the U. States. 57 
October, November, and December to January. The N.W. 
wind increases again from April towards December, and is ver 
small in October and November. The S.W. wind disappears in 
October, changing the form of the rose curve, but rea pearing 
in November and December and increasing towards anuary. 
The W. wind has a maximum in April and May and another 
in September and October, the minima being July and January. 
The N. wind in December, January and February, reaching a 
maximum in January, is the only other point to be noticed for 
San Francisco, partaking with the other places in the general ab- 
sence of easterly winds. The fables show a little in the winter. 
There is also but little S. wind there, 
ASTORIA AND SAN DIEGO. 
In general the winds at these two places resemble each other 
more than those at San Francisco do either. The rose curves 
for April, May, June, July and August (Nos. 4 to 8) have the 
Same general character. ‘The mean curve for the year (No. 13) 
and for the summer period (No. 15) have also the same general 
character, 
The N.W. wind is the summer wind and has the characteris- 
ties of the sea breeze, but there is no return land breeze. The 
-W. wind reaches a maximum in July and a mininum in De- 
cember. It is the great prevailing wind of the year (diagram 
No. 13) at San Diego. As it decreases it is generally replaced 
y W. and S.W. winds of less quantity. In December the 
quantities of the three winds are nearly equal. sone 
The resemblance of these winds at San Diego and Astoria is 
Temarkable, the remarks just made applying generally to both 
places. There is, however, much less N.W. wind at Astoria 
than at San Diego. Except in June, pt 5 and August there is 
Some S. wind each month at Astoria, and especially from Sep- 
tember through October, November, December and February, it 
Tesents a marked feature of the rose. At San Diego this is 
re ered, the two agreeing most nearly in quantity in March, 
and May. 
‘The S.E. ae is a distinct feature in both places in February 
and March, and at San Diego in April and June. 
e KE. wind is prominent at Astoria in January, February 
and March, and the N.E. from October to January inelusive. 
Astoria has the most easterly wind, the N.E. beginning in Oc- 
tober and blowing until February, and being replaced by the E. 
wind in March, | sei 
SECOND SERIES, VOL, XXV, NO. 73.—JAN., 1888. 
8 
