LONDON JOURNAL

OF

Arts and Sciences;

AND

REPERTORY

OF

PATENT INVENTIONS.

CONDUCTED BY

Mr. W. NEWTON,

OF THE OFFICE FOR PATENTS, CHANCERY LANE.
(Assisted by several Scientific Gentlemen.)

VOL. XV.

(CONJOINED SERIES.)

STOR LIBRARY

NEW-YORK

LONDON:

PUBLISHED BY W. NEWTON, AT THE OFFICE FOR PATENTS, 66, CHANCERY

LANE, AND TOWN-HALL BUILDINGS, MANCHESTER; SHERWood, Gilbert,
AND PIPER, PATERNOSTER ROW; SIMPKIN AND MARSHALL, STATIONERS'
COURT ; AND GALIGNANI'S LIBRARY, RUE VIVIENNE, PARIS.

1840.