CONTENTS OF VOL. XXX. 



(THIRD SERIES.) 



NUMBER CXCVIII.— JANUARY, 1847. 



Page 

 Mr. T. Ransome on the Composition and Explosion of Gun- 



Cotton 1 



Sir J. W. Lnbbock on the Meteor of September 25, 1846' .... 4 

 Mr. G. Boole's Remarks on the Rev. B. Bronwin's Method for 



Differential Equations 6 



Mr. C. J. Hargreave's Observations on the Rev. B. Bronwin's 

 Paper on the Integration and Transformation of certain Dif- 

 ferential Equations 8 



Mr. E. C. Nicholson on the Compounds of Phosphoric Acid 



with Aniline 10 



Mr. W. R. Birt on the remarkable Barometric Depression of the 



25th December 1821 18 



The Rev. N. S. Heineken on the Relics of the Mechanical 



Productions of Abraham Sharp, the assistant of Flamsteed. . 25 

 Mr. J. Cockle on some Formulae which serve to indicate the 

 limits of the application of Indeterminate Methods to the 



solution of certain Problems - 28 



Mr. J.Wilson on the .Solvent Action of Drainage- Water on 



Soils 30 



Prof. Challis's Report of Proceedings in the Cambridge Obser- 

 vatory relative to the New Planet 33 



Mr. J. P. Joule and Dr. Lyon Playfair on the Maximum Density 



of Water 4] 



M. le Dr. Ch. Robin on a peculiar Organ found in the Rays 



(Raia, Cuv.) 47 



Notices respecting New Books 53 



Proceedings of the Royal Society 57 



Royal Astronomical Society 60 



Buratite — a new Mineral 65 



On Bisulphuret, Tersulphuret, and Sulphocyanuret of Methyle, 



by M. Auguste Cahours 65 



On Sulphocyanuret and Bisuljihuret of Ethyle, by M. Auguste 



Cahours 67 



Analysis of the White Diopside 68 



Analyses of the Native Phosphates of Copper, by M. Hermann 68 



On Chiolitc — a new Mineral, by M. Hermann 70 



Purification of Mercury, by M. Millon 70 



Meteorological Observations for November 1846 71 



Meteorological Observations made by Mr. Thomp.son at the 

 Garden of the Horticultural Society at Chiswick, near 

 London ; by Mr. V'eall at Boston ; by the Rev. W. Dunbar at 

 Applegarth Manwe, Dumfries-shire ; and by the Rev. C. 



Clouston at Sandsvick Manse, Orkney 72 



a 2 



