Great care is necessary to protect it from rain, and it must if necessary be placed in a barn in which fires may be required during wet weather.
Neither hot, cold, nor wet weather has practically any effect whatever upon i t.
Plagues of locusts occasionally, during a drought, ruin growing crops; in damp wet weather these insects are destroyed by a fungus growth (Empusa gryllae) within their bodies.
In the eastern and south-eastern counties of England even greater variety of dry weather flow prevails than in the west, and upon the chalk formations there are generally no surface streams, except such as burst out after wet weather and form the so-called " bournes."
Drains ordinarily remove only excess of capillary water, an excess of percolating water in wet weather.