124 
months having an amount of oscillation not differing much 
from that of less elevated stations in nearly the same geogra- 
phical position. 
Excessive rain fall at stations of moderate elevation appears 
to be accompanied by a larger amount of oscillation than w hen 
the rain fall is below the average. At more elevated stations 
it appears as if this law was reversed, and, if found to be so, 
will be a very important fact. 
Temperature below the average for the season greatly 
increases the amount of oscillation. 
