CONTENTS. 1H 



Page 



2. Description of a Single Weather Sluice, invented by Robert Tiiom, 

 Esq. Rothesay, - - - - - - 343 



3. On coarse Paint made with Potatoes, - - - 345 



4. Method of preventing the Fracture of Glass Chimneys, - 340 



5. Description of Griebel's Portable Night Clock, - - ib. 

 C. Description of M. Allard's Universal Bevel, - - ib. 



7. Method of consuming the Smoke of Steam-Boiler Furnaces. By Mr 



G. Chapman, ..... 347 



8. Menstruum for biting in on Steel Plates for Fine Engravings. By 

 Mr Edmund Turrel, - - - - ib. 



9. Description of Lenormand's New Chronometer, - - 340 



10. On the Construction of Chimneys, - ... 34'J 



11. M. Ventau's Gigantic Meteorological Eolian Harp, - - ib. 



12. Natural Lamp by Incandescence, .... 350 



13. Oil for Chronometers, Clocks, .and Delicate Wheel- work, - ib. 



XXVIII. ANALYSIS OF SCIENTIFIC BOOKS AND MEMOIRS, 251 



I. On the Transverse Strain and Strength of Materials. By Mr Eaton 

 Hodgkinson, ... ib. 



II. On the Gold Mines of North Carolina. By Denison Olmsted, 

 Professor of Chemistry and Mineralogy in the University of North Ca- 

 rolina, ....... 358 



XXIX. NOTICES OF RECENTLY PUBLISHED BOTANICAL 



WORKS, - - - .364 



Greut Britain. — Transactions of the Linnasan Society of London. Prodromus 

 Flora? Nepalensis. Botanical Magazine, No. 45C, January 1825. No. 

 459, ApriL Botanical Register for December, No. 118. No. 119, Ja- 

 nuary 1825. Hooker's Exotic Flora, Part 19, February 1825. Part 

 20, March. ...... 365— 307 



XXX. SCIENTIFIC INTELLIGENCE, - - 367 



I. NATURAL THILOSOPHY. 



Astronomy. — 1. Comet of July and August 1824, discovered at Paramatta. 

 2. Comet of September 1824, discovered at Paramatta. 3. New Comet of 

 1825. 4. Longitude and Latitude of Paranlatta. 5. Action of the Moon 

 on the Earth's Atmosphere. 6. Lunar Eclipse of 31st May, observed at 

 Bushy Heath, ...... 307, 368 



Optics.— .7- Light produced during the Crystallization of Benzoic Acid. 

 8. Iridescence of Clouds, ..... 368, 309 



Electricity. — 9. Remarkable Electricity of Oxalate of Lime. 10. Electricity 

 developed in Capillary Attraction. 11. Electricity developed in Solutions and 

 Mixtures. 12. Electrical Gale, 369—371. 



Magnetism. — 13. Mr F>abbagc and Mr Herschelon the Magnetism develop- 

 ed during Rotation. 1 4. On the Magnetism imparted to Iron Bodies by 

 Rotation. 15. Mr Chiistic's New Experiments on the Magnetism produc- 

 ed by Rotation. - - ... 371,372 



Mi TLoitoi '><;y — 10. Remarkable Hailstones with Pyritic Nuclei. • 37 :< 



