Part II. CHEMISTRY. Revised Edition. Illustrations. 12mo, Cloth, 90 cents.
Part III. MINERALOGY AND GEOLOGY. Illustrations. 12mo, Cloth, 90 cents.
Published by HARPER & BROTHERS, Franklin Square, N. Y.
☞Either of the above volumes will be sent by mail, postage prepaid, to any part of the United States or Canada, on receipt of the price.
Entered, according to Act of Congress, in the year one thousand eight hundred and fifty-seven, by Harper & Brothers, in the Clerk’s Office of the District Court of the Southern District Court of New York.
PREFACE.
Children are busy observers of natural objects, and have many questions to ask about them. But their inquisitive observation is commonly repressed, instead of being encouraged and guided. The chief reason for this unnatural course is, that parents and teachers are not in possession of the information which is needed for the guidance of children in the observation of nature. They have not themselves been taught aright, and therefore are not able to teach others. In their own education the observation of nature has been almost entirely excluded; and they are, therefore, unprepared to teach a child in regard to the simplest natural phenomena.