BY ALFRED RUSSEL WALLACE.

WHAT IS EVOLUTION? 127
BY PROFESSOR EDWARD S. HOLDEN.

HOW THE SOIL IS MADE 135
BY CHARLES DARWIN.

ZOÖLOGICAL MYTHS 143
BY ANDREW WILSON.

ON A PIECE OF CHALK 171
BY T.H. HUXLEY.

A BIT OF SPONGE 205
BY A. WILSON.

THE GREATEST SEA-WAVE EVER KNOWN 211
BY R.A. PROCTOR.

THE PHOSPHORESCENT SEA 228
BY W.S. DALLAS.

COMETS 251
BY CAMILLE FLAMMARION.

THE TOTAL SOLAR ECLIPSE OF 1883 261
BY E.S. HOLDEN.

HALOS--PARHELIA--THE SPECTRE OF