Daily Consumption Of Water In London

London is said to require a daily snpply of more than 150,000,000 gaUons of water. Of this 15,000,000 gallons come froin deep wells in the chalk, the rest froni other sourees, principally from the rivers Thames and Lea. The water from the chalk, though very free from organic impurities, is exeeedingly hard, and, if not sof tened, costs the householder endless expense for cleaning boilers and structed