The latest great application of natural force to a useful purpose, in which it is announced that Nikola Tesla is especially interested, is an electrical process for purifying water, says the Baltimore "Herald." The system contemplates, it must be understood, not the shaking of a few millions of unhealthy microbes out of a few gallons of water. Mr. Tesla deals in no such small schemes as that. The plan, when made to work, will be expected to purify the inflow of the open rivers that contribute to the sup. ply of large cities. Instead of swallowing with every glassful of the murky beverage which flows from the faucet a large percentage of odorous protoplastic germs, the electrified water of Mr. Tesla may, be expected to possess the sparkle and sweetness of the aqueous fluid that flows from the mountain rocks. He could confer no greater boon upon humanity. Let us hope this time for practical results.
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