SAWS. EVERY DESCIPTION

Guaranteed under a forfeiture of $1000, to cut the most lumber with the least expense.

_Henry Disston & Son_,

PHILADELPHIA. Special attention paid to our new style Circular, Belt, Cross-cut, Mill and Hack Saws. Orders received from England, Ireland, and the Continent.

THE Scientific American FOR 1870

Cash Prize and Premium List

This Ill.u.s.trated Weekly Journal of

Practical Information, Art, Science, Mechanics, Invention, Chemistry, and Manufactures--Entered its Twenty-fifth Year on the 1st of January.

The SCIENTIFIC AMERICAN stands at the head of Industrial Journals of the world in point of Circulation and Influence.

Every number has Sixteen Imperial pages, embellished with Engravings of New Inventions, Machinery, Tools for the Workshop, House, and Farm, also Public Buildings, Dwelling Houses, and Engineering Works.

The Ill.u.s.trated Department of the SCIENTIFIC AMERICAN is a very striking feature, and has elicited the praise of the Press and all articles appearing in its columns are written in a popular and instructive style.

To Inventors and Mechanics the SCIENTIFIC AMERICAN has special value and interest, from the fact that it furnishes an Official List of Patents issued, with copious notes of the princ.i.p.al American and European Patents.

The Publishers offer the following

SCHEDULE OF CASH PRIZES.

For the fifteen largest lists of names sent in before February 10, 1870, the following Cash Prizes will be given:

$300 FOR THE FIRST LIST.

250 " SECOND LIST.

200 " THIRD LIST.

150 " FOURTH LIST.

100 " FIFTH LIST.

90 " SIXTH LIST.

80 " SEVENTH LIST 70 " EIGHTH LIST.

60 " NINTH LIST.

50 " TENTH LIST.

40 " ELEVENTH LIST.

35 " TWELFTH LIST.

30 " THIRTEENTH LIST.

25 " FOURTEENTH LIST.

20 " FIFTEENTH LIST.

Compet.i.tors sending names should be particular to mark "Prize List" on their orders, and remit the amount of subscription, as per terms. All Clubs of 10 names and upward, will be taken at the rate of $2.50 per annum.

To those who do not compete for the Cash Prizes the publishers offer the Splendid Steel Engraving, in size 22x36, ent.i.tled "MEN OF PROGRESS-AMERICAN INVENTORS." It contains the following group of ill.u.s.trious inventors, namely: Prof. Morse, Prof. Henry Thomas Blanchard, Dr. Nott, Isaiah Jennings, Charles Goodyear, Jos. Saxton, Dr.

W. T. Morton, Erastus Bigelow, Henry Burden, Capt. John Ericsson, Elias Howe, Jr., Col. Samuel Colt, Col. R. M. Hoe, Peter Cooper, Jordan L.

Mott, C. H. McCormick, James Bogardus, and Frederick E. Sickles. The likenesses are all excellent, and Mr. Sartain, who stands at the head of our American Engravers on Steel, in a letter addressed to us, says "that it would cost $4,000 to engrave the plate now," which is a sufficient guarantee of the very high character of the Engraving as a work of art.

Price of the Engraving, $10 for single copy. To enable all to possess this beautiful work of art, at, a very reduced rate, the SCIENTIFIC AMERICAN will be sent one year, together with a copy of the picture, on receipt of $10

Any one sending 10 Names for 1 year, and $30, will receive one picture 20 " " 50, " " "

30 " " 75, " two pictures 40 " " 100, " three "

50 " " 125, " four "

Compet.i.tors for the above prizes can send in names at any time on or before February 10th, and from any postoffice. For full particulars and sample copies of the SCIENTIFIC AMERICAN, address the Publishers.

Terms of the SCIENTIFIC AMERICAN: Single copy one year, $3.00; six months, $1.50; and one dollar four months. To Clubs of ten and upward, $2.50 each per annum.

MUNN & CO.,

37 Park Row, New York