... more. Thefact of the water in the LowerChalkbeingless than in the Upper needed no proof. He had been i n some deep wells in London with the late Mr. FrederickBraithwaite,andhad seen the very thing of which the Authorhad spoken. The subject of bournes,he believed, had also been misunderstood. He had...

...-line for thefullnaturalvariationtohave play. The bed of the valley forms in fact the attainable maximum, and the con- sequence is, that whenever the supply by rain exceeds the amount required to raise thewater-linetothisheight,theexces flows down the bed of the valley a s a streamor bourne...

... EVAPORATION PERCOLATION RAINFALL RAIN RIVERS FLOW WATERWORKS WATER SUPPLY WATER EXPERIMENTS GAUGES MANURE AGRICULTURE FLOODS HYDROLOGY DRAINAGE CHALK FILTRATION PURIFICATION WELLS TOWNS CITIES DEATHS FEVERS EPIDEMICS DISEASES PUBLIC HEALTH GAUGING BOURNES FENS RESERVOIRS SOILS...