United States or Samoa ? Vote for the TOP Country of the Week !
Experiments by Van der Steer, at the Helder, in the years 1861 and 1862, showed, for the former year, an evaporation of 602.9 millimetres from water, 1399.6 millimetres from ground covered with clover and other grasses; in 1862, the evaporation from water was 584.5 millimetres, from grassground, 875.5. Wilhelm, Der Boden und das Wasser, p. 57; Krecke, Het Klimaat van Nederland, ii., p. 111.
Word Of The Day