Mechanics

Manufacturers and Inventors

Join Our Community of Science Lovers!

On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.

A new Volume of tbe SCIENTIFIC AMERICAN ommeuces about tho middle of September in each ear. It is a journal of Scientific, Mechanical, and ther improvementR.; the ad'vocate of industry in all its variouw branches. It is published weekly jn a orm suitable for binding, and constitutes, at the end f each year, a splendid volume of over 400 pages, with a copious index, and from flye to six hundred riginal engravings, together with a great amount of practical information concerning the progress ef in-vontion and discovery throughout the world. The Scientific American is the most widely circulaR ed and popular journal of tbe kind now published Its Editors, Contributors, aud Correspondents are mong ,the ablest practical ecientific men in the world, The Patent Claims are pnbJisbed weekly and are nvaluable to Inventors and Patentees, We particularly warn the public against paying money to Travelling Agents, as we are not in the abit 0r furnishing certificates of agency to any no. Letter. should he directed (post-paid) to MUNN& 00" 128 Fultonstreet,New yu.k. Terms! Terms! Terms! One copy, for One Year $2 " Six Month. $1 Five copies, for Six Month. M Ten Copi.s for Six Montbs fOJ $8 Ten Copies for Twelve Months, $10 fifteen Copies for Twelve Month., $22 Twenty Oopies for Twelve Month., $28 Southeq' &nd Western Mone-y taken at par for bscriptibns, or Post Office Stamps taken at their all Mine.

It’s Time to Stand Up for Science

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.

I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.

If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.

In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.

There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.

Thank you,

David M. Ewalt, Editor in Chief, Scientific American