CONTENTS OF VOL. XXXIII. THIRD SERIES. V 



Page 



The Rev. Dr. Lloyd's Account of a Method of determining 

 the Total Intensity of the Earth's Magnetic Force in Absolute 



Measure 212 



Mr. B. C. Brodie's Investigation on the Chemical Nature of 



Wax 217 



Dr. J. Stenhouse on the Action of Chlorine on Anilic Acid . . 231 

 Notices respecting New Books : — Herschel's Astronomical 



Observations made at the Cape of Good Hope 231 



Proceedings of the Royal Astronomical Society 237 



On the Composition of the Phosphates of Uranium, by M. 



Werther 244 



On the Composition of the Arseniates of Uranium, by M. Werther 246 



On the Magic Square of the Knight's March 247 



Meteorological Observations for July 1848 247 



Table 248 



NUMBER CCXXIL— OCTOBER. 



Dr. E. Schunck's Remarks on the Substances discovered by 

 Mr. Stenhouse in the Roccella tinctoria and Evernia Pru- 



nastri 249 



Mr. Reuben Phillips's Account of some Experiments on Volta- 



Electric Induction 260 



Prof. J. R. Young on some Properties derivable from the deve- 

 lopment of a Binomial ; with a simplified proof of a remarkable 



Theorem of Abel 268 



Prof. E. Wartmann's Sixth Memoir on Induction 275 



Mr. G. Boole's Notes on Quaternions 278 



M. Ernst Briicke on the Existence of the Colour Brown 281 



Mr. J. Higgin on the Colouring Matters of Madder 282 



Mr. W. J. Henwood's Notice of a colourless Atmospheric Arch 



seen in the Interior of Brazil 295 



Notices respecting New Books : — Herschel's Astronomical Ob- 

 servations made at the Cape of Good Hope 296 



Proceedings of the Cambridge Philosophical Society 309 



On a singular Irregularity of Vision, by N. S. Heineken.Esq. . 318 

 On the Detection of Lead in the presence of Bismuth in Blow- 

 pipe Experiments, by E. J. Chapman, Esq 319 



On the Separation of Antimony from Arsenic, by C. Meyer . . 320 

 On the Composition of Orcine and its derivatives, by MM. Lau- 

 rent and Gerhardt 322 



On Pseudoquina — a new Alkaloid, by M. Mengarduque. ..... 323 



Preparation of Meta-Antimoniate of Potash as a Test for Soda 324 

 Solubility of the Hydrates of Copper and Chromium, &c. in 



Potash and Soda 325 



Meteorological Observations for August 1848 327 



Table 328 



