1872.} 
(Chase: 
EXPLANATIONS OF DIAGRAMS. 
The average rainfall in each figure is represented by the broken hori- 
zontal line. 
The lunar curves begin and end with the day of new moon ; 
the solar curves with Jamaary Ist ; the Jupiter curves, at conjunction for 
SC 
= 
y 
’ 
» 
C 
> 
. 
‘ 
oa 
San Francisco, at opposition for Lisbon. The vertical lines divide each 
cycle into octants. All the curves are for San Francisco, except in dia- 
grams $ and 7. 
A. P. 8.—VOL. XII.—30 
