THE NEW YORK PUBLIC LIBRARY,

ASTOR, LENOX AND TILDEN FOUNDATIONS.

THE MOST IMPORTANT DISCOVERIES AND IMPROVEMENTS
OF THE PAST YEAR,

IN MECHANICS; NATURAL PHILOSOPHY; ELECTRICITY; CHEMISTRY;
ZOOLOGY AND BOTANY; GEOLOGY AND GEOGRAPHY;
METEOROLOGY AND ASTRONOMY.

Ellustrated with Engravings.

BY THE EDITOR OF "THE ARCANA OF SCIENCE."

"Science pervades our manufactures, and Science is penetrating to our agriculture; the
very amusements, as well as the conveniences of life, have taken a scientific colour."
PRESIDENT's Address to the Brit. Assoc. 1840.