The welcome waterspouts have had also more positively beneficial effects.
A number of streams have their origin in the chalk ridges :or hills, such as the Chilterns; in which the water level 'rises and falls in response to past weather. This level had fallen. so .low that upper reaches of some of the most attractive streams quite disappeared. You could walk, dryshod along the bed and pick specimens of a,tiewly-encouraged flora. There seems to have been a more or less permanent fall in this water level, attributed locally to the -excessive demands of London.. However this may be; the level haS- risen before. the seasonal date at whiCh it was expected. February 'is, generally 'the month that fills the dykes, because of the long period' of 'reduced evaporation that precedes it_ :.-1f Commissioners would prevent defilement, fishermen would thent- selves restock the streams, though it would be necessary to put back craY- fishrand,dace.and.stickleback.if the.old. life of the streams is-to belestoMil, sa coniplete hai been the pollution.
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