THE GREAT EQUATORIAL OF THE
PARIS OBSERVATORY.
LILY OF THE VALLEY.
REPORT ON INSECTS
THE BREEDS OF DOGS.
RESTOCKING THE SEINE WITH FISH.
Figures show that the consumption of iron in general
construction—other than railroads—in this country
has grown from a little more than a million and a half
of tons in 1879 to more than six million tons in 1889.
Much of this increase has gone into iron buildings. By
using huge iron frames and thin curtain walls for each
story supported thereon, as is done in a building going
up on lower Broadway, New York city, a good deal of
space can be saved.
MODERN ARMOR.
THE COMPRESSED AIR SYSTEM OF PARIS.
THE BUILDERS
OF THE STEAM ENGINE—THE FOUNDERS OF MODERN INDUSTRIES
IMPROVED HAND CAR.
THE CONIC SECTIONS.
TABLE OF ATOMIC WEIGHTS.
THE TANNING MATERIALS OF EUROPE.
AN APPARATUS FOR HEATING SUBSTANCES
IN GLASS TUBES UNDER PRESSURE.
TESTING CEMENT.
THE SCIENTIFIC AMERICAN
Architects and Builders Edition
Building Plans and Specifications.
Useful Engineering Books
