these institutions.

BLACKADER & CO., 13. Paternoster Row.

* * * * *

Now ready, Part XX., price 2s. 6d., super-royal 8vo. Part XXI. on 1st June,
completing the Work, forming one large volume, strongly bound in cloth,
Price 2l. 12s. 6d.

CYCLOPAEDIA BIBLIOGRAPHICA; a Library Manual of Theological and General
Literature, and Guide for Authors, Preachers, Students, and Literary Men,
Analytical, Bibliographical and Biographical. A Prospectus, with Opinions
of the Press, sent Free on receipt of a Postage Stamp.

London: JAMES DARLING, 81. Great Queen Street, Lincoln's Inn Fields.

* * * * *

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_.

London: WHITTAKER & CO., Ave Maria Lane.

* * * * *

EVANS'S SELF-ACTING KITCHEN RANGES continue to maintain their superiority
over all others, for roasting, boiling, steaming, and baking, in the best
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Every article for the Kitchen in COPPER, IRON, and BLOCK TIN, always on
Sale at JEREMIAH EVANS, SON, & COMPANY'S STOVE GRATE Manufactory and Show
Rooms, 33. KING WILLIAM STREET, LONDON BRIDGE.

* * * * *

COLLODION PORTRAITS AND VIEWS obtained with the greatest ease and certainty
by using BLAND & LONG'S preparation of Soluble Cotton; certainty and
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Albumenized paper, for printing from glass or paper negatives, giving a
minuteness of detail unattained by any other method, 5s. per Quire