the spring and other periods of " wet weather." The instrument 

 was surrounded with unmoved grassy sod, shaded by a tall sap- 

 ling of alder on the west, and by tall shrubbery (Forsythia, etc.) 

 on the east. Station 3 (evaporimeter No. 34) was about six feet 

 east of the instrument shelter in the experiment garden (Fig. 

 37). On the north and west was sod, on the east and south 



