crocus, etc. Condit. Hanson & Van Winkle,
Newark, N. J., and 92 and 94 Liberty St., New York.

Sheet Metal Presses. Ferracute Co., Bridgeton, N. J.

Wright's Patent Steam Engine, with automatic cut off. The best engine
made. For prices, address William Wright, Manufacturer, Newburgh, N. Y.

Machine Knives for Wood-working Machinery, Book Binders, and Paper
Mills. Also manufacturers of Soloman's Parallel Vise, Taylor, Stiles &
Co., Riegelsville, N. J.

Rollstone Mac. Co.'s Wood Working Mach'y ad. p. 366.

Silent Injector, Blower, and Exhauster. See adv. p. 380.

Fire Brick, Tile, and Clay Retorts, all shapes. Borgner & O'Brien,
M'f'rs, 23d St., above Race, Phila., Pa.

Clark Rubber Wheels adv. See page 381.

Diamond Saws. J. Dickinson, 64 Nassau St., N.Y.

Steam Hammers, Improved Hydraulic Jacks, and Tube Expanders. R. Dudgeon,
24 Columbia St., New York.

Eclipse Portable Engine. See illustrated adv., p. 382.

Peerless Colors--For coloring mortar. French, Richards & Co., 410
Callowhill St., Philadelphia, Pa.

Tight and Slack Barrel machinery a specialty. John Greenwood & Co.,
Rochester, N. Y. See illus. adv. p. 380.

Elevators, Freight and Passenger, Shafting, Pulleys and Hangers. L. S.
Graves & Son, Rochester, N.Y.

Steam Engines; Eclipse Safety Sectional Boiler. Lambertville Iron Works,
Lambertville, N. J. See ad. p. 349.

Magic Lanterns, Stereopticons, and Views of all kinds and prices for
public exhibitions. A profitable business for a person with small
capital. Also lanterns for home amusement, etc. Send stamp for 116 page
catalogue to McAllister, M'f'g Optician, 49 Nassau St., New York.

Lenses for Constructing Telescopes, as in Sci. Am. Supplement, No. 252,
$6.50 per set; postage, 9 cts. The same, with eye piece handsomely
mounted in brass, 8.00. McAllister, M'f'g Optician, 49 Nassau St., N. Y.

For best low price Planer and Matcher, and latest improved Sash, Door,
and Blind Machinery, Send for catalogue to Rowley & Hermance,
Williamsport, Pa.

The only economical and practical Gas Engine in the market is the new
"Otto" Silent, built by Schleicher, Schumm & Co., Philadelphia, Pa. Send
for circular.

Penfield (Pulley) Blocks, Lockport N. Y. See ad. p. 381.

4 to 40 H. P. Steam Engines. See adv. p. 281.

Tyson Vase Engine, small motor. 1-33 H. P., efficient and non-explosive:
price $50 See illus. adv., page 380.

For Yale Mills and Engines, see page 381.

Lightning Screw Plates and Labor