The value of the SCIENTIFIC AMERICAN as an advertising medium cannot be over-estimated. Its circulation is ten times greater than that of any similar journal now published. It goes into all the States and Territories, and is read in all the principal libraries and reading-rooms of the world. We invite the attention of those who wish to make their business known to the annexed rates. A business man wants something more than to see his advertisement in a printed newspaper. He wants circulation. If it is worth 25 cents per line to advertise in a paper of three thousand circulation, it is worth $2.50 per line to advertise in one of thirty thousand.

RATES OF ADVERTISING.

 Back Page $1.00 a line.

Inside Page 75 cents a line. 

Engravings may head advertisements at the same rate per line, by measurement, as the letter-press.

FOR SALE--A 9-ft. Planer, 4 Lathes, 2 Shapers, Gear Cutter, Drill Press, Fanblower, Anvils, Vises, etc., at L. DUVINAGE'S, 209 Center st., New York.

TOSELLI'S Ice Machines, Simple in operation, makking transparent ice without steam power. Address G. B. NEWMAN,33 Maiden Lane, New York.

GALVANO PLASTIC IRON--For Bank Note Printing, Books, Engravings, etc. Patent Rights for sale by C. M. CLAY & CO., No. 45 Liberty st. Box 4950.

Cancers, Scrofula, and all Cutaneous Diseases cured by using the

SHELDON SPRING WATER.

Book of thirty pages, with certificates, sent free. Addres J. W. BEALS, Treasurer, Boston, Mass.

AGENTS WANTED IN EVERY COUNTY of the four following States:--Illinois, Indiana, Iowa, and Wisconsin, to sell B. F. Alexander's Patent Horse Hay Fork. For particulars address HOMER DUBREE, Glen Hope, Clearfleld Co., Pa.

Iron & Woodworking

Machinery Depot. New and Second-hand. GEORGE L. CUMMTNGS, 140 Center st., New York.

FOR SALE

AT A BARGAIN,

A BABCOCK & WILCOX ENGINE, 16-in. cylinder, 42 in. stroke, NEARLY NEW. This Engine is to be taken out by Wm. A. Harris, and replaced by a Corliss Engine, built by him. Address

WILLIAM A. HARRIS,

Providence, R.I., or 49 Murray st., New York.

HUNTER'S GUIDE--Revised, Enlarged, New Secrets Added. 24,000 already sold. Twenty-seventh edition of 5,000 copies Now Ready, enlarged, twenty new tanning secrets added (three cost $5 each). THE HUNTER'S GUIDE AND TRAPPER'S COMPANION tells how to hunt and trap all animals, from mink to bear, to make traps, boats, etc. How to tan and dress all hides, etc., etc., to color furs and skins. New secrets just added. The secret recipes in this book would cost $30 anywhere else. Tells how to hunt, fish, has hunting narratives, etc., etc. A New Book, well printed and bound, 64 pp. Price (not $1) but 25c.; six for $1; mailed free. Beware of "Recipes," "10-cent papers," and swindlers. Sold by all dealers. All wholesale news dealers sell it. Send for one. Worth $10 to any farmer, hunter, or boy. Only a "QUARTER." Address

HUNTER & CO., Publishers, Hinsdale, N.H.

COLLEGIATE & Commercial Institute (Gen. Russell's School), New Haven, Conn. Winter term begins Jan.11

FOR SALE--A splendid set of Sub-marine Diving Apparatus, but little used, cheap. Address Box 1582, Norwich, Conn.

We rarely open a more readable magazine than "The Galaxy." There is not a dull page between its covers.-N.Y. Times.

Well Sustains Its Reputation For Vigorous And Racy Writing

N. Y. Tribune.

A Model Periodical; A Credit To American Periodical Literature

Press, Philadelphia.

THE GALAXY FOR 1870.

GREAT ATTRACTIONS.

ARTICLES SECURED FROM

CHARLES READE, MRS. EDWARDS, RICHARD GRANT WHITE, ANTHONY TROLLOPE, JUSTIN McCARTHY, PARK GODWIN, DR. J. C. DALTON, DR. DRAPER.

And All the Leading Writers of the Day.

FIRST.

Put Yourself In His Place

Charles Reade's Great Story will continue to delight the readers of the Galaxy the greater part of the year 1870. Part First is is now ready in book form, and will be sent free with the Galaxy for 1870 on receipt of $4, the regular subscription price.

SECOND.

A NEW STORY BY MRS. EDWARDS, author of "Susan Fielding," "Steven Lawrence, Yeoman," etc. Mrs. Edwards is one of the very best female novelists now writing in the English language.

THIRD.

ANTHONY TROLLOPE will furnish a series of "Editors' Tales," in which he will work an entirely new vein.

FOURTH.

PARK GODWIN, one of the ablest American writers, will furnish a series of noteworthy articles on Historical subjects.

FIFTH.

RICHARD GRANT WHITE will continue his critical and social essays.

SIXTH.

JUSTIN MCCARTHY, whose skill as an efficient magazine writer is almost unequaled, has been engaged on the Editorial Staff, and will contribute regularly to the Galaxy.

SEVENTH.

TEN YEARS IN ROME, giving an inside view of the Roman Catholic Church, by a late Ecclesiastic, will be a noteworthy series of articles.

EIGHTH.

THE SCIENTIFIC ARTICLES will be prepared by Drs. Dalton and Draper, both eminent Physiologists.

NINTH.

THE EDITORIAL STAFF of the Galaxy is now very large, and has on it the best talent engaged on American periodical literature.

We have arranged for very liberal clubbing terms with the other leading periodicals.

A sample copy will be sent on receipt of 25 cents.

Price, 35 cents per number; $4 per year.

NOW IS THE TIME TO SUBSCRIBE.

THE GALAXY IS THE BEST OF AMERICAN MAGAZINES.

SHELDON & COMPANY,

498 & 500 Broadway, New York.

Found At Last

Watches Superseded. The Dollar Time Keeper.-A Perfect Gem.-Elegantly cased in Oriode of Gold, Superior Compass attachment, Enameled Dial, Silver and Brass Works, glass crystal, size of Ladies' Watch. Will denote correct time, warranted five years, superb and showy case, entirely of metal. This is no wood Compass. Is entirely new, patented. 6500 sold in three weeks. Only $1 each, three for $2, in neat case, mailed free. Trade supplied. Address the sole manufacturers, MAGNETIC WATCH CO>, Hinsdale, N. H.

STOCKS, DIES, AND SCREW PLATES Horton's and other Chucks. JOHN ASHCKOFT, 50 John st., New York. 16 tf

THE NOVELTY IRON WORKS--Foot E. 12th st., and 77 and 83 Liberty st., New York Manufacture the most approved Stationary Steam Engine, with Variable Cut-off, now in use.

ROBERT McCALVEY, Manufacturer of HOISTING MACHINES AND DUMB WAITERS. 602 Cherry st., Philadelphia, Pa.

STATEMENT.

ORDINARY FURNACE, from 15th to 20th April, produced 23,195 lbs. of Muck Bar, and 295 lbs. Scrap Bar, worked double turn. Day turn started at 3 A.M., and was done by 1 P.M. Night turn went on at 2 P.M., and was done by 11 P.M., worked 5 heats to each turn. Consumed 350 bushels of coal. Furnace was lighted on Sunday out of coal. The Stevenson Furnace, from 15th to 20th April, produced 29,160 lbs. of Muck Bar, and 515 lbs. of Scrap Bar, worked double turn. Day turn started at 3 A.M., and was done by 10 A.M. Night turn started at 11 A.M., and was done by 6 P.M., worked 6 heats to each turn. Consumed 300 bushels of coal. Furnace was lighted on Sunday out of coal. The same weight of heats of Pig and Scrap were weighed to each Furnace. On Stevenson Furnace, 3,963 lbs. more Muck Bar, and 220 lbs. more Scrap Bar were made, with 50 bushels less coal than were used in other furnace. The saving in ore (fix) in former over latter during the week, was 450 lbs., by actual weight. A very important feature is the great saving accomplished in brick and brick-laying. The first Stevenson Furnace, put up three months, has not had any repair put upon it, and is, to-day, in good working order, while the ordinary furnaces are generally repaired about every two weeks. The cost, over ordinary furnace, is about seventy dollars.

We cheerfully bear witness to the truth of the above statements of Mr. Stevenson. They are rather under than over the mark. The quality of iron made in his furnaces is the same as made by ordinary kind. We think it a valuable improvement, and intend to introduce it as fast as possible in our forge. J. PAINTER & SONS.

WILLIAM STEVENSON,

West Pittsburgh, Pa.

For Sale

The entire State Rights (except Georgia and Texas), of the Self-supporting Gate. Every farmer wants it, and will give from three to ten dollars for the right to make it for his own use. Address JOHN R. DAVIS, Covington, Ca., stating what you will give.

LARGEST-BEST-CHEAPEST!

MOORE'S RURAL NEW-YORKER.

THE GREAT ILLUSTRATED

Rural, Literary, and Family Weekly.

MOORE'S RURAL Excels in CONTENTS, Size, Style, ILLUSTRATIONS, etc. Sixteen Double-Quarto Pages of Five Columns Each. Ably Edited, Beautifully Illustrated, Neatly Printed, and adapted to both Town and Country. The RURAL is Profusely and Splendidly Illustrated--the vol. just closed containing OVER EIGHT HUNDRED ENGRAVINGS!

The Rural for 1870

Will be the Largest, Best, and Cheapest ILLUSTRATED JOURNAL OF ITS CLASS in the World! Only $3 a Year,--$2 50 in Clubs. All who form Clubs will get

"GOOD PAY FOR DOING GOOD!"

A choice of OVER ONE HUNDRED VALUABLE PREMIUMS! Specimens, Premium Lists, Posters, etc., sent free.

D. D. T. MOOME, 41 Park Row, N. Y,

2d-Hand Machinery.

22x48; 16x36; 10x24; 9x12; 8x24, Stationary; and 2 Portable Engines, in good order; Boilers of all sizes; Lathes; Wood and Iron Planers; Fay's Molding Machine; Machinery bought, sold, and exchanged.

W. WILLARD,

47 Dey st., New York.

THE GEM NOVELTY Combines a Superior Battonhole Cutter, Yard Measure, Scissors Snarpener, Knife Sharpener, Pencil Sharpener, Emery Cushion, Seam Ripper, Spool Stand,Thread Cutter, Scale, and Rule. A standard, popular, and rich article for agents, very ornamental and useful. Rapid sales guaranteed. Price prepaid by mail $1. For sample and liberal terms. Address J. H. MARTIN, Hartford, N. Y.

AN Experienced Civil and Mechanical Engineer is open for engagement as Manager. Would undertake Contract Work. Address "Engineer," care of Philip S. Justice Philadelphia, Pa.

McCHESNEY'S IMP'VD GIG OR SCROLL

Saw

First Medal and Diploma, Fair of the American Institute, N. Y., Sept. and Oct., 1869. Superior to any for either light or heavy work. For description and price address

T.L. CORNELL, Birmingham, Conn.