December 1, 1492.

Nature

A WEEKLY

ILLUSTRATED JOURNAL OF SCIENCE

December 1, 1892

Nature

A WEEKLY

ILLUSTRATED JOURNAL OF SCIENCE

VOLUME XLVI

MAY 1892 to OCTOBER 1892

"To the solid ground

Of Nature trusts the mind which builds for aye."-WORDSWORTH

London and New York
MACMILLAN AND CO.

1892