REPORT OF ACTING METEOROLOGIST.* 
ee — 

NOTES ON FLUCTUATIONS IN- HEIGHT OF WATER IN 
AN UNUSED WELL. 
There is a well on the roadside northeast of the Station 
buildings. For several years it had been unused, when measure- — 
ment of the distance from the top of the curbstone was begun in 
December, 1886.+ 
There has been found an unaccountable rise and fall of the 
water in this well which has been compared with the rainfall as — 
herewith, with atmospheric pressure, and with speculations, but 
no tenable explanation of the phenomena has heretofore been 
found. | 
The height of the water in the well on the first day of each 
month, with interpolations for 1889 at various dates on which 
changes in the direction of variation took place, and also the rain- — 
fall for the month preceding, for two years, is here given. In 
order to make the figures more readily intelligible, the results are 
also presented in graphic form the same as in the previous report 
and including all the data there given. _ 
The method of and scale for the graphic diagram is the same 
as first adopted. The scale is one-third inch between vertical 
lines for months and one-sixth inch between the horizontal lines 
reduced about half for printing. “Hach mark in the water-table 
record indicates one foot, measured from the top of the diagram, 
and, in the record of precipitation, each mark represents one-fifth 
of an inch, measured from the bottom.” A few facts which have 
been noted, in- relation to the changes of level of the water in 
this well, are: : 
1. Fluctuations in the precipitation from month to month did 
not much affect the height of the water-table. The very light 
precipitation of January, 1887, did not stop the rise of the water- — 
*Frank E. Emery, Acting Meteorologist. 
+Station Report 1888, pp. 197-8. 
