POPULAR TECHNOLOGY; OR, PROFESSIONS AND TRADES.

BY EDWARD HAZEN, A. M.,

AUTHOR OF "THE SYMBOLICAL SPELLING-BOOK," "THE SPELLER AND DEFINER," AND "A PRACTICAL GRAMMAR."

EMBELLISHED WITH EIGHTY-ONE ENGRAVINGS.

IN TWO VOLUMES.

VOL. II.

NEW YORK: HARPER & BROTHERS, PUBLISHERS. 1870.

Entered, according to Act of Congress, in the year 1841, by Harper & Brothers, in the Clerk's Office of the Southern District of New York.