viii LIST OF PLATES. 



Pa s e - 

 ments depending on the Relation of Air to Heat and Moisture. 



By Mr. Leslie 457 



Proceedings of the Royal Society, Nov. 4, 11, and 18 463 



. . Linnaean Society, Nov. 2 and 16 465 



Geological Society, Nov. 5 and 19 466 



Description of Pyrodmalite 467 



Properties of Polychroite 468 



. Picrotoxine ibid. 



Boletic Acid 469 



On the Freezing of Alcohol 471 



Situation of Cryolite in Greenland ibid. 



Mr. Howard's Meteorological Apparatus ibid. 



Biddery Ware ibid. 



Gong 472 



New Patents ibid. 



Meteorological Journal, Oct. 16 to Nov. 14 473 



Index 475 



PLATES IN VOL. II. 



Plate Page 



VIII. Symbols of Chemical Bodies 42 



IX. Col. Beaufoy's Compass for observing the Magnetic Va- 

 riation 96 



X. Apparatus for measuring the Specific Heat of the Gases 212 



XI. Structure of St. Michael's Mount 252 



XII. Scale of the Emission of Carbonic Acid Gas from the 



Lungs during Respiration * . v . . 332 



XIII. Instrument used in Dr. Prout's Experiments on the 



Quantity of Carbonic Acid Gas emitted from the 

 Lungs 342 



XIV. Scale of the Rate of the Barometer during a Year, at 



London, Paris, and Geneva 408 



