204

EDINBURGH NEW

PHILOSOPHICAL JOURNAL,

EXHIBITING A VIEW OF THE

PROGRESSIVE DISCOVERIES AND IMPROVEMENTS

IN THE

SCIENCES AND THE ARTS.

EDITORS.

THOMAS ANDERSON, M.D., F.R.S.E.,

REGIUS PROFESSOR OF CHEMISTRY, UNIVERSITY OF GLASGOW;

SIR WILLIAM JARDINE, BART., F.R.SS.L. AND E. ;
JOHN HUTTON BALFOUR, A.M., M.D.,
F.R.S., SEC. R.S. EDIN., F.L.S.,

REGIUS KEEPER OF THE ROYAL BOTANIC GARDEN, AND PROFESSOR OF MEDICINE AND BOTANY,
UNIVERSITY OF EDINBURGH.

FOR AMERICA,

HENRY D. ROGERS, LL.D., Hon. F.R.S.E., F.G.S.,

STATE GEOLOGIST, PENNSYLVANIA; PROFESSOR OF NATURAL HISTORY IN THE
UNIVERSITY OF GLASGOW.

JULY .... OCTOBER 1863.

VOL. XVIII. NEW SERIES.

EDINBURGH:

ADAM AND CHARLES BLACK.

LONGMAN, BROWN, GREEN, & LONGMANS, LONDON.

MDCCCLXIII.

PRINTED BY NEILL AND COMPANY, EDINBURGH.

CONTENTS.

1. On the Phenomena of the Scratched Rock Surfaces.

BY THEODORE KJERULF; with a Notice of the Post-

Pliocene Fossils of Southern Norway. By Dr SARS,

Professor of Natural History, Christiania,

PAGE

1.

2. Note on Lemania variegata of Agardh. By GEORGE

LAWSON, LL.D., Ph.D., Professor of Chemistry and

Natural History in the Queen's University of Canada, 30

3. Descriptions of New Genera and Species of Diatoms

from the South Pacific. By R. K. GREVILLE, LL.D.,

F.R.S.E., &c. (Plate I.), .

4. On the question, Is Oxide of Arsenic, long used in a

very small quantity, injurious to Man? By JOHN

DAVY, M.D., F.R.SS. Lond. and Edin.,

5. Illustrations of the Significance of certain Ancient British

Skull Forms. By DANIEL WILSON, LL.D., Professor

of History and English Literature, University College,

Toronto,

34

43

51