u CONTENTS. 
ART. PAGE, 
X. ANALYsIs OF ScrenTiFIC Books. 
i. Outlines of the Geology of England and Wales, with an intro- 
ductory Compendium of the General Principles of that Science, 
and comparative Views of the Structure of Foreign Countries, 
illustrated by a coloured Map and Sections. By the Rev. W. D. 
Conybeare, F.R.S., M.G.S., &c.; and Wiit1am Purtiires, 
HIS, MGW Se... eo 
ii. Conversations on Mineralogy, with Plates, engraved by Mr. 
and Miss Lowry, from Original Drawings. In 2 vols., 1822 . . 
iii. Philosophical Transactions of the Royal Society of London, 
far the year MDCCOX AIR PART Ad eh ere i ieee os 
iv. Treatise on Meteorology, by Joun Les iz, Esq., Professor 
of Natural Philosophy in the University of Edinburgh, and cor- 
responding Member of the Royal Institute of France. . . 
XI. AstTronomicat and NauTicat Couuections. No. XI. 
i. A Catalogue of the Polar Distances of Thirty-nine principal 
Stars. By the Rev. Joun Brinxtey, D.D., &c. &c.—ii. Polar 
Distances of the Thirty-nine Stars, from different Catalogues.— 
iii, Elements of a Table of Refraction, deduced from Observation 
only.—ivy. Remarks on the Astronomical Measurements of the 
AnGlentsierdat Sane ane ot an sh a Acoma) | ome, satin 
XII. Corrections in Right Ascension of Thirty-six principal Stars. 
By James Soutn, F.R.S. «7 wee eee ee 
XIII, Progress or ForEIGN ScIENCE «+ we ew ee 
XIV; « °° Miscetranzous INTELLIGENCE. 
I, MecHanicat Science. 
1. On the Fabrication of Artificial Magnets, 2. Retrograde 
Movement of the Magnetic Needle. 3. Comparison of British 
and French Canals, by M. Huerne de Pommeuse, Member of 
the Chamber of Deputies. 4. Description of a Ductilimetre, or 
an Instrument for Pe ie the Ductility of different kinds of 
Lead, Tin, &c. 5. On the Application of Machinery to the pur- 
pose of Caliulating anid Printing Mathematical Tables. 6. Strength 
of Cast fron. 7. Steam-Engine. §. Steam-~Engine Chimieys: 
9, Bridge of the SS*. Trinita over the Arno at Florence. . 
II. Cuemican Science. 
1. Tincture of Brazil Wood, asa re-agent, by Mr. P. A. de 
Bonsdorf. 2. The Manufacture of Wine improved by Chalk. 
3. Analysis of Verdigris. 4, Black Enamel obtained from Plati- 
num. 5. Test for Magnesia. 6. On the uses of Sulphate of 
Lead inthe Arts. 7. Green Fire. 8. Composition of 'Tutenag, 
or Chinese White Copper. 9. Effect of Voltaic Electricity upon 
. 172 
. 186 
191 
198 
