The literary digest . e walls of the tube, wherethey adhere until the tube is jarred or hammered by a mechanicaldevice, when they fall into hoppers below. When properlydesigned, a Cottrell treating system can remove about ninety-five per cent, of the dust or liquid content of the gas passingthrough the tubes composing it. As a direct electric current of 100,000 volts was unknown whenthis process was first developed, new machinery had to be de-vised and built to generate it, but all obstacles have now beenovercome, Mr. Easton tells us, and these electric dust-aboUshersare now in successful oper
The literary digest . e walls of the tube, wherethey adhere until the tube is jarred or hammered by a mechanicaldevice, when they fall into hoppers below. When properlydesigned, a Cottrell treating system can remove about ninety-five per cent, of the dust or liquid content of the gas passingthrough the tubes composing it. As a direct electric current of 100,000 volts was unknown whenthis process was first developed, new machinery had to be de-vised and built to generate it, but all obstacles have now beenovercome, Mr. Easton tells us, and these electric dust-aboUshersare now in successful operation, to the relief of the general public,and, in some instances, to the great financial advantage of thosewho have adopted them. SOCKS WITH COTTON TOPS—We recently printed a sug-gestion from Prof. E. W. Gudger, of North Carolina NormalCollege, to the effect that wool might be conserved by knittingstockings with wool feet and cotton tops. Professor Gudgernow sends lis a letter from Rufus W. Scott, of the knit-goods. AFTER THE CURRENT WAS TURNED ON. section of the War Industries Board, in which occurs the follow-ing paragraph: For your information we are very glad to ad\ise j^ou thatmany millions of pairs of wool stockings have been bought anddistributed to our soldiers, the tops of which were made entirelyof cotton, the foot and lower-leg portion being made of wool. The Literary Digest for January 11, 1919 23 WILL THE INFLUENZA COME BACK? THE LAST GREAT INFLUENZA EPIDEMIC—thatof 1890—continued, in parts of the United States atleast, through 1893. That this is the usual history of thedisease, and that we must prepare for something of the sort in thepresent instance, is the belief of Dr. W. A. Evans and Dr. M. , of the Chicago Health Department; and they fortifytheir opinion with statistics and diagrams representing healthconditions in Chicago during the years in question. The writersremind us at the outset that altho the present epidemic beganin Europe several mo
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