Star.
London, England, 1819-06-04 00:00:00

CONTENTS.

Airraosostv.—M. Blot on the Length of .the Pendulum at
Unst. Mr. Troughton on the Length of the Pendulum as mea-
sured by Mr. Whitehurst and Captain hater. Mr. Troughton
on the Nautical Top.
()rms.—Dr. Brewster on a Singular Structure in Apopkyl-
kite (with a Plate). Mr. Sivright on a new Method of rnakieg
Single Microscopes. Dr. Brewster and Dr. Gordon on the Hu-
man Eyc. Dr. Brewster on a remarkable Optical Property in
Tabasheer.
BlEenvsocs.—Method of Weighing Anchors on the Coast of
Coromandel. Mr. Hunter on a Self-acting Pump. (With an
Engraving.)
MA TUSII ATICS...-PrOftl 30T Wallace on Elimination.. Mr.
Shbliage on Prime Numbers.
Citamisravo—M. Berzelius on Weak Affinities. Mr. Herschel
on the Hyposulphurous Acid. Dr. Fyffe on the Waters of the
Arctic Seas. Mr. Bald on the Temperature of Coal Mines.
Illevroaotoov..--Mr. Adie on a new Hygrometer. Dr. Ll-
vingitene on ari improved Hygrometer. Mr. Adie on the
Sympiesorocter, (with an Engraving),
Mtnassioov.—Professor Jameson on Granite, Qicrtz Rock,
and Sandstone. Dr. P. Ilaniikon (Buchanan), on the Diamond
Mine of Parma. 'Professor Janrsnn on the Black Lead Mines i
of Tiorrnilale, Ayrshire, and Glen Szrathfarrar. Professor'
limeson on Secondary Greenstone and Wicke; trin Connecting
Veins, and on Trap Veins.—(With a Plate.)
ZooLOGY.—Captaio Scoresby on the Greenland Whale. Dr.
Fleuxiiig on the Arctic and Skua Gulls. Mr. Neill on the Bea-
vers
of Scotland.
Grooaseity.—Sir Charles Gicsl4 on the Residence of the 1
Grc...tilzmio s. Captain Scoresby on Jan Mayen's Island. Mi.
J. D. P'raise's Journey to the Sources ot the .lotiana and Ganges.
Account of the Expedition to Palhn's ti y. Account of an Ka-
cordon to Thebes: Mr. Murray on the Niger, &e.
GaNan..tt. Servecr.—Account of the inundation of the Via de
Bagnes, svith a Map of. the Valley and Views of the Glacier,
See. Account of the Discoveries respecting the Sphinx, and the
rmi Great Py id. Dr. Ilibbcre. Account of (Silbert Tate, a bey
born Dcaf nd Blind, in Shetland.
I slocoodi sof the Royal Societies of Tandonnand r:diitburgb,
and of the 'erneri.tn Society.—Scientifie Intelligence, ilec. -

NAY'S CALCINED MAGNESIA continues
ri to be prepared with the most scrupulous care and anew.
lion, by Messrs."Tuostas and WILLI** Hama, Manufacturing
Chemists, Minn:butter. It is• sold in bottles, price Ss. 9d. or
with glass stoppers at is. ed. Stamp included, with full directions
for its use, by their Various Agents in the Metropolis, and
throughout the Mind K WOW& ; bath eannnt be genuine, unless
their names are easvaveti-an the Government Stamp, which is
fixed ever the cork or stopper of each bottle.-01 most of the
venders of the Magnesia may be bad, authenticated by a similar
Stamp, litztav's AROMATIC SPIRIT of VD:IGAR, the invention of
;Mr. henry, and the only genuine preparation of that article.

•
FOR PRESERVING AND BEAUTIFYING rat TPETIL
THE VEGETABLE TOOTH-POWDER has so
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. Sold in Boxes, at 2s. ed. by R. BUTLER and SONS, Che-
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United Kiogdorn. N. B. Purchasers
nrcrevrested to absent? that the name and address 1. " 4,
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sante Mire r:r
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