| Description | Monthly tables of comparisons of change between the mean daily horizontal and vertical intensities and sets of values including columns for: changes in mean monthly intensity in angular space, mean montly horizontal and vertical intensities, intensities suppoosed =1, daily change in declination from mean position of magnetic axis, change in declination East from mean of the month, and change in declination from mean of the month. With a table for changes of the mean hourly values of horizontal and vertical intensity during the month, absolute determinations, and some meteorlogical data, including mean temperatures and rainfall during the month.
Each monthly sheet is headed: 'Changes of Horizontal and Vertical Intensity during the month of....' [month and year added] and signed by C.M. Elliot. |