Illustrated Catalogue Of Magic Lanterns (after November 1889, probably 1890)

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MCINTOSH BATTERY AND OPTICAL CO., CHICAGO, ILL., U. S. A. struction, its capacity nearly equals that of the No. 2. the No. 1 or the No. 2 Ether Saturators are designed for the single lantern only. Either use with The: No. 2 Ether Saturator consists of two cylindrical nickel- plated brass tubes, each two inches in diameter and 13 inches ong, with a porous filling having a channel in the center 3 / 8 0 f an inch m diameter, to allow free passage of oxygen gas. A metal cap with lead filling is screwed on the end of each tube • on the center of each cap is a nipple for connecting the rubber tubes and also for filling with ether. PRICE ; moo he No. 3 Ether Saturator is in every respect similar to the No. 2, excepting that it consists of three tubes, each constructed m the same manner as the tubes in the No. 2 Saturator, and held together by clamps, as depicted in above cut. This size is de- signed for use with the double or dissolving stereopticon. The caps should be removed only when the porous filling needs dry- ing out, and should be replaced on the tube having the same number. The Saturator will more than replace the cumbersome hydrogen generator or cylinder costing two or three times as much. The smaller one weighs only 1% pounds, while the larger one only 4^ pounds. Aside from the directions for oper- ating the Mclntosh-Ives Ether Light as given in the following pages, a few general remarks may be given. Use a high grade of ether only, that used by surgeons for anesthesia preferably always be sure that you have a sufficient quantity of ether in the saturator; to fill the saturator is best accomplished as follows : our in ether at either end, it does not matter which, of each tube or saturator, in turn, until liquid ether runs out in a free stream, and let it trickle and drain until it escapes drop by drop- this shows that the porous filling is thoroughly saturated. One