by fil- tration, and precipitation of the organic matters by Only S3.00 a Year, including Postage. Weekly. WW wICIv SPECIALTY. —Mention this Paper4 lime. With 3 illustrations. Contained in Scientific) 52 NumbiTH a Year. We build Automatic Engines from 2 to 200 H. P., American Supplement, No. tfOg.… … PRESERVATION op railway ties DYNAMO-ELECTRIC MACHINES.—A or Canada, on receipt of three dollars by the pub- ELECTRIC CONVEYORS.—DESCRIP- and Timber by the use of Antiseptics. A paper by J. P. study of the leading types of these apparatus. Illus- Card describing the method of treating wood by the…
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