CONTENTS OF VOL. XXIX.— THIRD SERIES. VII 



NUMBER CXCVL— DECEMBER. 



The Rev. Baden Powell's Remarks on some Points of the Reason- 

 ing in the recent Discussions on the Theory of the Aberration 

 of Light 425 



Mr. E. J. Lowe on remarkable Solar Halos seen on the 19th 

 of October 1846 440 



A simple Demonstration of a remarkable Proposition relative to 

 Polyhedrons 442 



Mr. J. J. Griffin on the Constitution of Aqueous Solutions of 

 Acids and Alkalies 444 



Mr. T. Hopkins's Observations on a Paper entitled " Some 

 Points in the Meteorology of Bombay," read by Colonel Sa- 

 bine to the British Association in 1845, and published in the 

 Philosophical Magazine for January 1846 467 



Prof. Powell's Note on the Bands formed by Partial Interception 

 in the Prismatic Spectrum 474 



Dr. Playfair on Palmic Acid, a Fat Acid related to the Mar- 

 garyle Series 475 



M. H. Bleibtreu's Researches upon Cumarine 480 



The Rev. B. Bronwin on the Integration and Transformation 

 of certain Differential Equations 494 



Mr. J. E. Bowman on the Electricity of Gun-Cotton 500 



Dr. J. Redtenbacher on a Common Origin of the Acids (CH) M 

 4 with a Boiling-point under 300° Centigrade 501 



NUMBER CXCVIL— SUPPLEMENT TO VOL. XXIX. 



Prof. G. B. Airy's account of some Circumstances historically 

 connected with the Discovery of the Planet exterior to Ura- 

 nus 511 



M. Van Breda on the Luminous Phenomena of the Voltaic Bat- 

 tery 538 



Dr. H. Kolbe on the Formation of Nitric Acid in Eudiometric 



Combustions of Gases mixed with Nitrogen 543 



Mr. J. E. Bowman on Tribasic Boracic iEther 546 



Notices respecting New Books 550 



Experiments on Coffee — Chlorogenic Acid 553 



Analysis of Talc and Steatite 555 



Cause of the Efflorescence of Laumonite 555 



Analysis of Heulandite, by M. Damour 556 



Easy reduction of Chloride of Silver 556 



On the Chemical Properties of Ruthenium and some of its Com- 

 pounds, by Dr. C. Claus 556 



On Phospham and Phosphatide 563 



