_AN IMPORTANT FACT._ MARVIN & CO.'S SPHERICAL SAFES HAVE NEVER BEEN ROBBED.

Hundreds are in use by Banks, Bankers, and Merchants.

{265 Broadway, New York.

{721 Chestnut st., Philadelphia.

Warehouses, {108 Bank st., Cleveland.

{ 93 Main st., Buffalo.

L: L: SMITH & CO., NICKEL PLATERS, 6 HOWARD ST., NEW YORK, Between Elm and Centre.

_SAVE YOUR FUEL._

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THE ORIGINAL L. B. TUPPER'S FURNACE GRATE BAR.

Guaranteed to make from 5 to 10 lbs. more steam, with less fuel, than any other bar. Adapted to all kinds of fuel; no alteration of furnace required. Received Silver Medal at Cincinnati Industrial Exposition, 1870; Silver Medal at Worcester Co. Mechanics' a.s.sociation, 1866; Medal and Diploma at American Inst.i.tute Fair, 1870; Honorable Mention at Paris Exposition. Send for descriptive pamphlet. Now in use in 10,000 places.

L. B. TUPPER, 120 West st., New York.

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PYROMETERS.

For Blast Furnaces, Bakers' Ovens, Boiler Flues, Superheated Steam Oil Stills, Zinc and Lead Baths. E. BROWN, 311 Walnut st., Philadelphia.

_AGENTS WANTED._

To sell the UNIVERSAL SASH LOCK. IT IS SELF-ACTING AND BURGLAR-PROOF.

Send stamp for circulars. Carpenters and Builders can make from $10 to $20 selling them. Address G. S. LACEY, care of Patterson Brothers, No.

27 Park Row, New York city.

SPERM OIL, _strictly pure_, for SEWING MACHINES and fine Machinery, in bottles and bbls.

Sample by mail, 25 cts. W. F. NYE, New Bedford, Ma.s.s.

_THE REASONS WHY_

DOOLEY'S YEAST POWDER is preferred to any other Baking Powder in market, are owing to its perfect purity, quality, quant.i.ty, and economy. The ingredients are strictly free from deleterious substances, and hence the full strength of each is obtained, and the results are uniform every time it is used. This cannot be the case in those of ordinary manufacture, and for proof of our a.s.sertion, we ask those who have never used DOOLEY'S YEAST POWDER to give it a trial.

Your grocer keeps it. DOOLEY & BROTHER, Manufacturers, 69 New st., New York.

PATENT CUTTERS for the Teeth of Gear Wheels, which can be sharpened by grinding, without changing their form. Cutters made on this plan will last many times as long as those of the common form, with the advantage of being always ready for use. Descriptive circular, with price list, sent per mail on application. BROWN & SHARPE M'F'G CO., Providence, R. I.

A SPRING OF WATER AT THE TOP OF THE HOUSE.

HOUGHTON'S AUTOMATIC WATER ELEVATOR, patented Feb. 7, 1871, No.

111,542, delivers water from the well or cistern in the tank at the top of the house. Is operated by the fire in the kitchen range without additional fuel; is simple in construction, reliable and cheap.

Reliable parties wanted to introduce them into use in all the States except New England. For drawings and full description address

CHARLES HOUGHTON, 41 State St., Boston, Ma.s.s.

SHORT HAND.--150 words per minute in four weeks. Send stamp for Circular.

PROF. GRAY, P. O. Box 4847, New York.

WATCHES THAT ARE WATCHES.

WE SHALL BE PLEASED TO SEND OUR DESCRIPTIVE PRICE LIST OF GENUINE WALTHAM WATCHES, TOGETHER WITH AN ILl.u.s.tRATED PAMPHLET ENt.i.tLED A HISTORY OF WATCHMAKING, TO ALL WHO SEND US THEIR ADDRESS. NO MATTER HOW REMOTE YOU ARE FROM NEW YORK, WE CAN SELL YOU A WATCH AT THE SAME PRICE AS IF YOU WERE HERE. WHEN YOU WRITE MENTION THAT YOU SAW THIS NOTICE IN THE SCIENTIFIC AMER. HOWARD & CO., 865 BROADWAY, N. Y.

ENGINES, TOOLS, MACHINERY, ETC., FOR SALE AT THE NOVELTY IRON WORKS, FOOT OF EAST 12TH STREET, NEW YORK CITY,

EMBRACING Engines, Planers, Lathes, Smith and Boiler Makers' Tools, and Machinery and Patterns of the most approved kinds, etc. Also, 1 High Pressure Engine, 12-inch diameter by 30-inch stroke: 2 Stevenson's Patent Turbine Water Wheels, 66-inch diameter, and 1 Marine Beam Engine, 60-inches by 10-feet stroke. Send for catalogue.

JNO. S. SCHULTZE,

RECEIVER OF THE NOVELTY IRON WORKS.

New York, March 1, 1871.