POPULAR SCIENCE

MONTHLY.

CONDUCTED BY E. L. AND W. J. YOUMANS.

CONTENTS.

PAGE

I. The Place of Conscience in Evolution. By Rev. T. W. FOWLE..
II. Civilization and Science. III. By Prof. EMIL DU BOIS-REYMOND..

III. Artificial Precious Stones. By CARUS STERNE....

513

529

539

IV. The Teredo and its Depredations. II. By Dr. E. H. VON BAUMHAUER. (With

Illustrations.)...

545

V. Science in the English Schools..

558

VI. Monera, and the Problem of Life. By EDMUND MONTGOMERY, M. D. II. The

Physical Phase of the Problem...

563

VII. The Astronomical History of Worlds. By Prof. DANIEL VAUGHAN.

571

VIII. Genealogy. By JOHN AMPHLETT..

583

IX. An Infant's Progress in Language. By FREDERICK POLLOCK..

587

597

X. The Origin of Fruits. By Prof. GRANT ALLEN

XI. Sketch of Prof. O. C. Marsh. By G. B. GRINNELL. (With Portrait.)......
XII. EDITOR'S TABLE: The English Report on International Copyright-Cookery and Educa-
tion-Science in relation to Teaching-The Classics in Germany-Death of Prof. William
Monroe Davis.

LITERARY NOTICES: Lessons in Cookery: Training-School Hand-book-BAIRD's Annual
Record of Science and Industry, for 1877-BARZELLOTTI'S Ethics of Positivism-CLIFFORD'S
Elements of Dynamic-FRICK's Physical Technics-Current Discussion-WILLIAMSON'S
Ferns of Kentucky-Bulletin of the United States Geological and Geographical Survey of
the Territories-Cook's Manual of the Apiary, etc....
POPULAR MISCELLANY: The Recent Solar Eclipse-Progress of the Electric Light-
Bathing as a Cause of Ear-Disease-The Carpet-Beetle-The Earthquake-Scare in North
Carolina-Material Resources of European Russia-Meteorological Notes-Death to the
English Sparrow-Agencies of Nitrification-How Ants distinguish each other-How the
Lake Dwellers lived-Rapid Decay of Timber.

NOTES.

612

618

625

633

640

NEW YORK:

D. APPLETON

AND COMPANY,

549 & 551 BROADWAY.

1878.

COPYRIGHT BY D. APPLETON & CO., 1878.

THE CINCINNATI

Wesleyan College for Women.

REV. DAVID H. MOORE, D. D., PRESIDENT.

Thirty-seventh Year begins Sept. 11th.

College of Letters and Science.

Conservatory of Music.

Academy of Fine Arts.

One of the finest edifices in the West. Every convenience and comfort for boarders. Students last year from sixteen States. Pupils received at any time.

from $334 to $500.

Annual expense