CONTENTS. 



Hi 



XIV. On the Manner in which Friction affects the Mo- 

 tions of Time- Keepers. By Edward Sang, Esq. 

 Teacher of Mathematics, Edinburgh, Member of 

 the Society of Arts, &c. . . .129 



XV. Progressive Increase of Temperature as we descend 



in the Crust of the Earth, . . .143 



XVI. Researches on Wines and other Fermented Liquors. 



By Lewis C. Beck, M.D., Professor of Chemistry 

 and Botany in the University of the City of New 

 York, &c. &c. . . . .145 



XVII. On the Action of Voltaic Electricity on Alcohol, 

 Ether, and Aqueous Solutions. By Arthur 

 Connell, Esq. F.R.S.E. . . .159 



XVIII. Memoir on the Degree of Selection exercised by 

 Plants, with regard to the Earthy Constituents 

 presented [ to their absorbing Surfaces. By 

 Charles Daubeny, M. D., F. R. S., L. S., G. S., 

 Professor of Botany and Chemistry in the Uni- 

 versity of Oxford, .... 164 



XIX. Note on Taking the Dew-Point directly, by the Me- 

 thod of Leroi and Saussure, . . . 177 



XX. Scientific Intelligence, . . . 189 



natural philosophy. 

 1. Velocity of Electricity, . . . 179 



GEOLOGY. 



■ 2. On the^ Imprint of the Feet of Animals upon Red 

 Sandstone. 3. Rolling of the Sea on the Coast 

 of Peru. 4. Large Mass of Native Copper. 5. 

 Earthquakes. 6. Fossil Marine Plants. 7. Gold 

 Region of the United States, . . 182-185 



ZOOLOGY e 



8. On Aphis Persicse. 9. Edible Birds Nests, how 

 formed. 10. Pilot-fish. 11. Effect of Mountain 

 Air on Man. 12. Temperature of Fishes. 13. 

 Salmon of the Columbia River. 14. Respiration 

 of Birds. 15. On the Mytilus polymorphus, or 

 the Driessena polymorpha, a remarkable species 



