Practical Exercises in Elementary Meteorology. Robert DeCourcy Ward

is necessary, the adjustment of the barograph being made by turning a screw, underneath the column of shells, on the lower side of the wooden case.

      1

      In the United States, marine meteorological observations are forwarded to the United States Hydrographic Office, Navy Department, Washington.

      2

      Each scholar will need a blank book in which to preserve the observations.