OF THE

POLARISCOPE

AND ITS PRACTICAL APPLICATIONS

ADAPTED FROM THE GERMAN EDITION OF

H. LANDOLT

PROFESSOR OF CHEMISTRY AT THE POLYTECHNICUM, AACHEN

BY D. C. ROBB B. A.

AND

V. H. VELEY B.A. F.C.S.

WITH AN APPENDIX BY I. STEINER F.C.S.

ILLUSTRATED

London

MACMILLAN & CO.

1882