CONTENTS* V 



FOREIGN. 



21. Polytechnic Society of Paris, 



22. Geological Society of France, 



Page. 



191 



192 



23. Baron Ferussac's new work on Shells, - - - 193 



24. Epistilbite from Elba, - - ... 



194 



NECROLOGY 



Baron de Zach, 



194 



CHEMISTRY AND MECHANICAL SCIENCE. 



1. Electro-Magnetism, 



2. On the chemical action of magneto-electric currents; by G. 



D. Botto, 



■ 



3. Water Barometer, - - - - - - 



4. 5, 6. Vegetable matter in Carnelian — Clay for sculptors — De- 



196 



197 



198 



puration of all sorts of oil and of butter, • - 200 



NATURAL HISTORY. 



1. Thermal spring in the bed of the Rhone, - 201 



2. Geology, - 



203 



ASTRONOMY. 



1, 2. First observation of spots on the sun — Rotation of the pi-m- 

 et Venus, - -,_.-- 



204 



DOMESTIC ECONOMY AND AGRICULTURE. 



1, 2, 3, 4, 5. Destruction of rats — Lute for bottling wine, &c. — 



Artificial granite — Method of cleansing wool from its 

 grease, and economizing the residue — To prevent vines 

 from bleeding when trimmed or cut, .".•',.•'."• 205 



6. Valuable material for walks and alleys, '■ - - - 206 



7, 8. Stucco for walls — Method of cutting glass vessels uniformly 



206 



without cracking, 



9. Rice paper, 



207 



HORTICULTURE. 



Notes relative to Garden Dahlias, 



203 



MEDICINE. 



Use of milk in dropsy, 



209 



STATISTICS. 



1. The Savings Bank of Geneva, 



2. Scientific premiums, 



20! » 

 210 



3. Population of England and Scotland. - - - ■> 211 

 Yew work* in England, - 



a i o 



I 



