Vi CONTENTS OF VOL. IV. — FOURTH SERIES. 



Page 



Mr. T. G. Bunt's Pendulum Experiments 272 



M. Biot's Report on M. Pasteur's Researches on Aspartic and 



Malic Acids 275 



Mr. J. Glaisher on the Meteor which appeared on Thursday, the 



12th of August 1852, at about 9^ 20™ p.m. Greenwich Time. 292 

 Prof. Hamilton on Continued Fractions in Quaternions (con- 

 tinued) • • 303 



Prof. Thomson on a Universal Tendency in Nature to the Dis- 

 sipation of Mechanical Energy 304 



Proceedings of the Royal Society ■ 306 



Apparatus for the determination of Carbonic Acid, by Max. 



Schaffner 317 



On the Absorption of Heat by a Bismuth and Antimony Joint. 318 



On the Peroxide of Silver, by F. Mahla 318 



Meteorological Observations for August 1852 319 



Table 320 



NUMBER XXVI.— NOVEMBER. 



Prof. De Morgan on the Early History of Infinitesimals in 

 England 321 



Dr. Andrews on a new Aspirator. (With a Plate.) 330 



Mr. \V. G. Lettsom on the Occurrence of Metallic Iron in 

 Fossil Wood 333 



Mr. J. J. Sylvester on Staudt's Theorems concerning the con- 

 tents of Poh'gons and Polyhedrons, with a Note on a new 

 and resembling Class of Theorems 335 



Mr. J. Napier on Copper Smelting. — Construction of the Fur- 

 naces, &c. {continued) 345 



Mr. W. J. M. Rankine on the Causes of the Excess of the 

 Mean Temperature of Rivers above that of the Atmosphere, 

 recently observed by M. Renou 355 



Mr. W. J. M. Rankine on the Reconcentration of the Mecha- 

 nical Energy of the Universe 358 



Dr. Penny and Mr. W. Wallace on Chloride of Arsenic 361 



Mr. J. J. Sylvester on a simple Geometrical Problem illustra- 

 ting a conjectured Principle in the Theory of Geometrical 

 Method 366 



Dr. Woods on Chemical Combination ; and on the Amount 

 of Heat produced by the Combination of several Metals 

 with Oxygen 370 



Mr. R. Adie on the Temperature of a Bismuth and Antimony 

 Joint during the passage of an Electrical Current 380 



Proceedings of the Royal Society 381 



Remarks on the Mechanical Equivalent of Heat.byA.F. Kupffer. 393 



On the Kain-water collected at the Observatory at Paris, by 

 M. Barral 396 



