MICROSCOPES, OPERA GLASSES, SPY Glasses, Spectacles, Thermometers, Barometers, Compasses. R. & J. BECK, Manufacturing Opticians. Philadelphia, Pa. Send for Illustrated Priced Catalogue.

The Oldest Yankee Notion House In The World. Howard Brothers & Read, Successors to Howard, Sanger & Co., OWNERS OF The Howard Manufacturing Co., MANUFACTURE AND INTRODUCE Patented Novelties THE ONLY Real Pocket Scale IN THE MARKET. MADE OF METAL, Heavily Nickel Plated, COMPACT, STRONG, DURABLE. Can be carried in the Vest Pocket. Each one warranted absolutely accurate. Weighs up to 8 lbs. Price 25 Cents Sample by mail on receipt of price. A liberal discount to the trade. No. 1 - "Post Office," weighs to 8 ozs. No. 2 - "Pocket," weighs to 8 lbs. Howard Manufacturing Co., Box 2295, New York.

BOGARDUS' PATENT UNIVERSAL ECCENTRIC MILLS - For grinding Bones, Ores, Sand, Old Crucibles, Fire Clay, Guanos, Oil Cake, Feed, Corn, Corn and Cob, Tobacco, Snuff, Sugar, Salts, Roots, Spices, Coffee, Cocoanut, Flaxseed, Asbestos, Mica etc., and whatever cannot be ground by other mills, Also for Paints, Printers' Inks, Paste Blacking, etc. JOHN W. THOMSON, successor to JAMES BOGARDUS, corner of White and Elm Sts., New York.

THE

New York Ice Machine Company,

21 Courtland St., New York, Rooms 54, 55.

LOW PRESSURE BINARY ABSORPTION SYSTEM

Machines Making

Ice And Cold Air

Low Pressure when running. No pressure at rest. Machines guaranteed by C. H. Delamater & Co.

Our new Stylographic Pen (just patented), having the duplex interchangeable point section, is the very latest improvement. THE STYLOGRAPHIC PEN CO., Room 13, 169 Broadway, New York. Send for circular.

Knabe. Pianofortes

Unequaled in

TONE,
TOUCH,
WORKMANSHIP, &
DURABILITY.

Warerooms 112 Fifth Avenue. New York.
204 & 206 W. Baltimore St., Baltimore.

Non-Conductor Coverings,. For Steam Boilers And Pipes

THE RAYMOND M'F'G CO.,
642 West 52d St., 108 Liberty St., New York.

Power Shears

STILES & PARKER PRESS CO., Middletown, Conn.

DO YOUR OWN PRINTING $3 PRESS prints etc. (Self-inker $4) Larger sizes for larger work. For old or young. Great money saver. A paying business anywhere for all or spare time. Send two stamps for a catalogue of all sizes. Presses, Type, Cards, Paper etc., to the Manufacturers KELSEY & CO., Meriden, Conn.

The Asbestos Packing Co.,

Miners and Manufacturers of Asbestos,

Boston, Mass., Offer For Sale:

PATENTED ASBESTOS ROPE PACKING,
PATENTED ASBESTOS LOOSE PACKING
PATENTED ASBESTOS JOURNAL PACKING
PATENTED ASBESTOS WICK PACKING
PATENTED ASBESTOS MILL BOARD,
PATENTED ASBESTOS SHEATHING PAPER,
PATENTED ASBESTOS FLOORING FELT,
PATENTED ASBESTOS CLOTH.

OF THE Scientific American

FOR 1881.

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