THE

Edinburgh

JOURNAL OF SCIENCE,

CONDUCTED BY

DAVID BREWSTER, LL.D.

F.R.S. LOND. AND EDIN. F. S. S. A. M. R. I. A.

CORRESPONDING MEMBER OF THE INSTITUTE OF FRANCE; CORRESPONDING MEMBER OF THE ROYAL
PRUSSIAN ACADEMY OF SCIENCES; MEMBER OF THE ROYAL SWEDISH ACADEMY

OF SCIENCES; OF THE ROYAL SOCIETY OF SCIENCES OF DENMARK

OF THE ROYAL SOCIETY OF GOTTINGEN, &C. &C.

THE

Edinburgh

JOURNAL OF SCIENCE,

CONDUCTED BY

DAVID BREWSTER, LL.D.

F.R.S. LOND. AND EDIN. F.S. S. A. M. R. I.A.

CORRESPONDING MEMBER OF THE INSTITUTE OF FRANCE; CORRESPONDING MEMBER OF THE ROYAL
PRUSSIAN ACADEMY OF SCIENCES; MEMBER OF THE ROYAL SWEDISH ACADEMY

OF SCIENCES; OF THE ROYAL SOCIETY OF SCIENCES OF DENMARK

OF THE ROYAL SOCIETY OF GOTTINGEN, &c. &c.