JOURNAL OF SCIENCE.

CONDUCTED BY

SIR W. FAIRBAIRN, BART., F.R.S.; WILLIAM CROOKES, F.R.S.;
ROBERT HUNT, F.R.S.; H. WOODWARD, F.G.S., F.Z.S.;

AND

JAMES SAMUELSON,

OF THE MIDDLE TEMPLE, BARRISTER-AT-LAW,

EDITOR.

VOLUME VII.

With Illustrations on Copper, Stone, and Wood.

Paris:

Leipzig:

FRIEDRICH KLINCKSIECK.

ALFONS DÜRR.

MDCCCLXX.

LONDON: PRINTED BY W. CLOWES AND SONS, STAMFORD STREET AND CHARING CROSS.