CONTENTS. t 



Page. 



6, 7. Adalysis of a nevv mineral, from Iloboken — Temperature 



of the atmosphere and of plants, &c. - - - 167 



8. Helvetic Society of Natural Sciences, - - - 168 



9. Determination of the time which a drowned person has been 



170 



under water, 



MECHAMCAL PHILOSOPHY. 



1. Magnetic influence of the violet ray, - - - - 171 



2, 3. Iron works of Sweden — Calorific effects of the Voltaic pile, 173 



4. Electro-magnetic property of carbon, - - - - 175 



5. On the deflection of light, - - - - * - 176 



6. Preservation of firemen against fire and flame, - - 177 



7. 8. Plumbago instead of oil in watches and chronometers 



Optical surgery, - 179 



9. A remarkable watch, 180 



10. Magnetic influence of the solar beam, - - - 181 



STATISTICS, 



1, 2. Number of pupils in the universities of the Netherlands 



in 1827 — Peruvian geography and geognosy, - 182 



3. Revue Encyclopedique, . - - ^ ^ - 



4, 5. Comparative number of books which appear in France 



184 



and Germany — Vauquelin, ----- 185 



MISCELLANIES f-QKEIGN AND DOMESTIC. 



!• Vegetable coloring materials in Canada, _ . * 186 



2. Phosphorescence of the sea in the Gulf of St. Lawrence, 187 



3. Antarctic expedition, .---.-- 188 



4. Gold and platina, - . - - t - - - 190 



5, 6. Rock crystals substituted for crown glass in making tele- 

 scopes — On the temperature of the sea, - - 191 



7. Proceedings of the Lyceum of Natural History, of New York, 193 



195 



196 



8. Providence Franklin Society, 

 9* Circular scale of equivalents, 



10. Notice of a locality of Arragonite, - - - - 197 



11. Thomson's scientific medals, - • - - 198 

 12,13- Porcelain clay — Galvanic currents, - - 199 

 14, 15. Tennessee Meteorite — Rensselaer School Flotilla, 200 

 16, 17. Production of hydro-cyanic (prussic) acid, under uncom- 

 mon circumstances- — Dr. Morton's paper, - - 201 



NOTICES OF RECENT AND FORTH-COMING SCIENTIFIC WOKKS- 



1. Arcana of Science and Art: or one thousand popular in- 

 ventions and improvements, abridged from the transac- 

 tions of public societies, and from the scientific jour- 

 nals, British and foreign, of the past year, (1329.) 202 



Domestic. 



I, 2. American Ornithology — Encyclopaedia Americana, 202 



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