Dec., 1909.] 
Evaporation in a Bog Habitat. 
2 I 
weeks, they were continued until Oct. 2. Unfortunately, the 
instrument in the central zone was disturbed on August 21, and 
on September 1 1 , had disappeared entirely. Temperature 
readings were also taken in the two zones. 
Fig. 1 . Central Zone Station. 
Fig. 2. Station in Maple-Alder Zone. 
It was thought that an average of the precipitation and tem- 
perature records taken at the stations of the Weather Bureau at 
Pataskala, Gratiot, and Granville, would represent, approx- 
imately, the meteorology of our station at the bog. The records 
of wind velocity which are necessary to make the observations 
complete were not obtainable. 
The climatology and evaporation data for the bog station are 
given in the table below: 
