The purpose of this little book is to present the chief features in the strange story of the pebbles; and so of the larger pebble we call the earth. It is hoped that readers of various ages will be entertained, without suspecting that they are being taught. (_b_) The fact that there seemed to be an opportunity for improvement not only in the popular presentation of scientific topics but in the character and method of review questions and suggestions following such topics in school texts.…
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