Chronometer, Gold, 50 guineas; Silver, 40 guineas. Every Watch skilfully
examined, timed, and its performance guaranteed. Barometers, 2l., 3l., and
4l. Thermometers from 1s. each.

BENNETT, Watch, Clock, Instrument Maker to the Royal Observatory, the Board
of Ordnance, the Admiralty, and the Queen.

65. CHEAPSIDE.

* * * * *

Just published, with ten coloured Engravings, price 5s.

NOTES ON AQUATIC MICROSCOPIC SUBJECTS of NATURAL HISTORY, selected from the
"Microscopic Cabinet." By ANDREW PRITCHARD, M.R.I.

Also, in 8vo.; pp. 720; Plates 24; price 21s., or coloured, 36s.,

A HISTORY of INFUSORIAL ANIMALCULES, Living and Fossil, containing
Descriptions of every Species, British and foreign; the methods of
procuring and viewing them, &c., illustrated by numerous Engravings. BY
ANDREW PRITCHARD, M.R.I.

"There is no work extant in which so much valuable information
concerning Infusoria (Animalcules) can be found, and every Microscopist
should add it to his library."--_Silliman's Journal._"

Also, price 8s. 6d.,

MICROGRAPHIA, or Practical Essays on Reflecting and Solar Microscopes;
Eye-Pieces; Micrometers, &c.

Also, edited by the same, price 18s.,

ENGLISH PATENTS; being a Register of all those granted in the Arts,
Manufactures, Chemistry, &c., during the first forty-five years of this
century.

WHITTAKER & Co., Ave Maria Lane.

* * * * *

On 15th of December, price 2d.; stamped, 3d.

THE BIBLIOGRAPHICAL MISCELLANY, NO. II., contains a reprint of the very
rare, and probably unique, Tract of SIR DUDLEY DIGGES on the NORTH-WEST
PASSAGE to India and China printed in 1611, and is appended to JOHN
PETHERAM'S CATALOGUE OF OLD AND NEW BOOKS (upwards of 1000 articles) FOR
DECEMBER, 1853.

JOHN PETHERAM, 94. High Holborn.

* * * * *

SALES BY AUCTION.

This Evening, at 6.--Remainders of numerous magnificent Illustrated
Books.--By SOUTHGATE & BARRETT, at their Rooms, 22. Fleet Street, THIS
EVENING, December 15th, and following Evenings (Saturday and Sunday
excepted), at 6,

ROBERTS'S HOLY LAND, EGYPT, NUBIA, &c.; Digby Wyatt's Industrial Arts of
the Nineteenth Century (of both of which the lithographic stones will be
destroyed during the progress of the sale); Digby Wyatt's Metal Work, and
its Artistic Design; Kirby Wyatt's Geometrical Mosaics of the Middle Ages;
Darrell's China