ee ill a ee ee 
Whole time of the series 11° intervals 
eee 
First Course 40 Series. 
Rca: 
Unit ef Vapor (ae )= % cunce. 
Unit of time (abs= 9." 
Water ig0° 
_ Whale time ere intervals. 687 
tee ee Se ee ee ee ee 
we we oe ne oo 
