VI CONTENTS. 



Page 

 Mr. De la Bcche on the Temperature of the Surfac^Water of the Atlantic 333 



On the Value of Leases ..........H.^...'.^;..'iiilirA*k*...... .. 336 



Mr. Gray on Mammalia i.;.. i..^ ;.,..;< i..**.. »♦♦« 337 



Dr. M*Keever on the Influence of Solar Light on Combustion 344 



Dr. Thomson's Answer to Mr. Rainy 352 



Prof. Buckland on the Anoplotherium CommUne 860 



Mr. Levy on Two New Minerals 36l 



Dr. Thomson on the Method of analyzing Sulphate of Zinc. . . .% ';;;<-..' . . 363 

 Rev.Mr.Emroetton the Mathematical Principles of Chemical Philosophy 372 

 Reciprocal Action of Hydrosulphuric and Carbonic Acid on the Carbo- 

 nates and Hydrosulphates . 38 1 



Carbono-phosphate of Soda , 381 



Beryl in Cornwall 383 



Sodalite of Vesuvius 384 



Boracic Acid in Lava ? v 384 



On the Circulatory System of Saurii 384 



On the Float of Janthina 385 



On the Vertebrae of Reptiles and Amphibia 386 



On the enormous Sumatra Ape 387 



On some newly described British Shells 387 



On the East Indian Unicorn 388 



On the Chinese Manner of forming Artificial Pearls 389 



Greenwich Observations S9O 



On the Zetland Islands 393 



Thermometrical State of the Terrestrial Globe 304 



Light of Haloes 395 



On Aerolites 395 



On Evaporation 396 



Amsterdam Canal 896 



Sea Horse killed in Orkney 396 



New Scientific Books 397 



New Patents 398 



Mr. Howard's Meteorological Journal , 399 



NUMBER VI.— DECEMBER. 



Mr. Stephens on the Comparative Tanning Powers of Astringents 401 



Rev. J. B. Emmett's Observations on the Planet Venus 410 



M. Rose on the Compounds of Antimony with Chlorine and Sulphur. . . 4l6 

 Mr. Gray's Attempt to divide the Echinida, or Sea Eggs, into Natural 



Families 423 



Mr. Levison on some singular Fossil Nuts 43 1 



Mr. Prideaux on the Advantages of High Pressure Steam 432 



Col. Bcaufoy*s Astronomical Observations 435 



Dr. Thomson on Three new Salts of Soda 435 



Mr. Davies on the Nature and Phenomena of Flame 447 



