PROF. BIGELOW'S SOLAR-MAGNETIC WORK.

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AMERICAN POLAR HARES: A REPLY TO MR. RHOADS.

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LORD KELVIN AND MR. MURRAY 'ON THE TEMPERATURE VARIATION OF THE THERMAL CONDUCTIVITY OF ROCKS.

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LOSS OF PROFESSOR MILNE'S SEISMOLOGICAL APPARATUS, LIBRARY AND COLLECTION.

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Animal Effigies.

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The Charleston earthquake.

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Elementary instruction in zoology.

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THE WASHINGTON MONUMENT, AND THE LIGHTNING STROKE OF JUNE 5.

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Electric time-signals.

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PROPAGATION OF SOUND BY LIGHT IN i8ii.

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