| Description | Daily records of evaporation and rainfall made at 6.00am 'during the night' and 6.00pm 'during the day'. With columns for temperature of water, observed evaporation, evaporation calculated for changes of temperature in inches, and rain in inches. With totals and means.
Headed 'Register of Rain and Evaporation taken at Madras during the Month of December 1842'. Signed [p.1]: 'S.O.E. Ludlow Supt. Magl. Observatory'. |