This Bayi is paar in Hert Orbettas Price 31. 16s. i in Boal, 
. ; Saat. Mok EEeor 5 
RANSACTIONS of the GEOLOGICAL SOCIETY, atone” 
by a Volume containing 40 Plates and Maps, many of them coloured. 
London. ©. 
The Third Volume is expected to ba published early 5 in June > > 
This Day i is published, in one Yolume 12mo, Price 8s. dd. Boards, 
N ELEMENTARY INTRODUCTION to the KNOW LEDGE 
of MINERALOGY; including some Account of Mineral Elements \ 
seh Cohsccuentd! ; Explanations of Terms in common use; brief Accounts - 
of Minerals, and of the Places and Cireumstancesin which a are found, 
Designed for the Use of the Student. - jane 
By WILLIAM PHILLIPS, 
‘Member of the Geological Society, 
London : Printed and sold by William Phillips, Nerree Yard, Lom. 
‘bard Street. 
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_ This Day i is published, in Demy Octavo, Pics 3s, 6d, Boards, as : 
EMARKS onthe EDITIO ALTERA of the PHARMACOPGIA 
LONDINENSIS, and on Dr, Powext’ s Translation and Bite ni) 
tions, 
By RICH ARD PHILLIPS. 
palate: Printed and ists by. William Phillips, ae Yard, Lome oe 
4 
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This Day is published, in Qctavo, Price. 9s, Boards, 
DESCRIPTIVE GATALOGUE of the BRITISH SPECT. 
A MENS deposited in the Gronocicat hip erearia of the Rprey 
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By WILLIAM THOMAS BRANDE,F.RS. 
Printed for. Langraan, Hurst, Rees, Orme, and Brow Ay hasan 
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at 
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ENGRAVIN NGS Si 
Vol. XLI, Parvs’s “Mercurial Maltaic .Conductor. —_Lesuie? s. De i 
ferential ‘Thermometer. ‘ Diagrams to illustrate Dr, Woxtaston’s Peri- 
scopic Camera Obscura and Microscope.—-Count RumFoxn’s improved 
Coffer-pots.—-Mr. Goss’s Instrument to work Addition of Numbers - _ 
with Accuracy and. Dispatch.—Mr, Davis’s hanging Scaffold; and 
‘Mr. Maxtix’s Method of relieving a Horse from a Cart when fallen 
down in its Shafts— A ied Plate to illustrate. Mr. J. Hicws’s Ac- 
count of the Situation and Means of raising the Royal George—A Plate 
- to illustrate Mr, Soytuean’s Essay on the Equilibrium of a Combination — 
of Beanis, Blocks; &c. andon the Polygon of Forces.—A Plate to illustrate 
Mr, Srexvews’s Account of a Meteor seen at London and other Places in, i 
s Marek: lest—rA Plate to Mugerate Mr, sidadily ib 's Aamalar Saw. 
cme sf ¢ vy 
H 
Printed and sold By Wm, Phillips, eee Yard, Lombard aia ee 
