The foot is so squeezed upward that, in walking, only the ball of the great toe touches the ground.

The other factors entering into such determination are the size of the plant and the character of the feed water.

This invention relates to a new and useful compound for lubricating railroad car axle journals, and other journal bearings.

Special care should be taken to prevent air, steam or water leaks into the boiler or onto the pressure parts to obviate danger of corrosion.

The metal used was lead and antimony, seven to one.

After the walls have become thoroughly heated, coal may be fired and the boiler placed in service.

388.—Iron Rails and Bars, and Modes of Manufacturing the same.—Eldridge Wheeler, Philadelphia, Pa. February 15, 1871.

All surfaces should be painted before the covering is applied. Canvas is ordinarily placed over the covering, held in place by wrought-iron or brass bands.

Full information, as to price of drawings, in each case, may be had by addressing

Napier deduced an approximate formula for the outflow of steam into the atmosphere which checks closely with the figures just given.

The actual transfer rates in superheaters are affected by so many conditions that it has not so far been possible to evolve any formula of practical value.

4,294.—Apparatus for Pitching Barrels.—Louis Schulze, Baltimore, Md. Patent No. 106,964, dated August 30, 1870.

4,699.—Back of a Chair or Sofa.—George Unverzagt, Philadelphia, Pa.

Seeding Machine.—Lewis B. Myers and Henry A. Myers, Elmore, Ohio. Letters Patent No. 16,772, dated March 3, 1857.

The Scientific American will be delivered in every part of the city at $3.50 a year.

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

The Circular Stocking Frame, from 2 in. to 5½ in. diameter. These circular frames, with my last improvements, are as near perfection as possible.

Learn everything you need to know about Non Fiction via these 581 free HackerNoon stories.

A biography of sorts, describing my life as a geek nerd.

This +700-page, $16 book is a summarization of the +200 interviews that Tim Ferriss has done on his podcast.