Scientific American Supplement, No. 832, December 12, 1891

The reamer should now be used and driven by hand. Several devices have been applied to rock drills for reaming the hole by machinery while drilling; that is, efforts have been m...

Several sodic-baryta methods have been recently invented. Of these we will mention one where 1/4000 to 1/2000 part of calcined soda is added to the beet slices in diffusors. The...

He was familiar with the Berkenshaw rail, with which the best English roads were then being laid, but he saw that, as it required an expensive chair to hold it in place, it was...

During 1831-35 the company's shops were located at Hoboken, N.J., and during the winter of 1832-33, three locomotives were commenced at these shops (two completed before March,...

But as soon as the principle by which distant objects could, apparently, be brought nearer the eye became known and its value recognized by philosophers, telescopes ceased to be...

II. ASTRONOMY.--A Plea for the Common Telescope.--By G.E. LUMSDEN.--The increasing interest in astronomy and instances of work done by telescopes of moderate power, giving examp...

As to the crew. A master who has full command of himself ought to be able to rule judiciously even the most unruly crew, but before he is in a really _strong_ position to do thi...

Space is wanting to furnish ampler information. Our object is simply to call attention to a zone which is somewhat neglected from a scientific point of view, and which, however,...

_Phosphorus._--Immediately phosphorus, either the ordinary yellow variety or red phosphorus, comes in contact with fluorine, a most lively action occurs, accompanied by vivid in...

It is unnecessary for me to point out to you the importance of this work, embracing a collection which has held the leading place in the line of general information on invention...