CONTENTS OF VOL. XXXI. 



(THIRD SERIES.) 



NUMBER CCV.— JULY 1847. 



Page 



Sir J. Lubbock on the Perturbations of Planets moving in 



Eccentric and Inclined Orbits 1 



Prof. Schoenbein on the Discovery^of Gun- Cotton 7 



The Rev. B. Bronwin on the Inverse Calculus of Definite In- 

 tegrals 12 



Mr. W. R. Grove on certain Phajnomena of Voltaic Ignition 

 and the Decomposition of Water into its constituent Gases 



by Heat 20 



Mr. C. R. Weld on the Invention of Fluxions 35 



Sir R. Kane's Researches on the Composition and Characters 

 of certain Soils and Waters belonging to the Flax districts 

 of Belgium, and on the Chemical Constitution of the Ashes 



of the Flax Plant 36 



Dr. Schunck on the Colouring Matters of Madder 46 



Comparative Analysis of the Urine of the Calf and the Sheep. . 49 

 Mr. Hind on the expected Reappearance of the celebrated 



Comet of 1264 and 1556 50 



Messrs. G. Merck and R. Galloway's Analysis of the Water of 



the Thermal Spring of Bath (King's Bath) 56 



Notices respecting New Books 67 



Proceedings of the Royal Society 69 



Action of Chlorine on Alcohol. — Formation of Acetal 77 



Bisilicate of Iron or Ferruginous Pyroxene 78 



Chlorosulphuret of Silicium 78 



Meteorological Observations for May 1847 79 



Meteorological Observations made by Mr. Thompson at the 

 Garden of the Horticultural Society at Chiswick, near 

 London ; by Mr. VeaU at Boston ; by the Rev, W. Dunbar at 

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

 Clouston at Sand wick Manse, Orkney 80 



NUMBER CCVI.— AUGUST. 



The Rev. N. J. Callan on a new Voltaic Battery, cheap in its 

 construction and use, and more powerful than any Battery 

 yet made ; and on a cheap substitute for the nitric acid of 

 Grove's Platina Battery 81 



Sir J. Lubbock on the Perturbations of Planets moving in Ec- 

 centric and Inclined Orbits (^concluded) 86 



Sir J. Lubbock on the Heat of Vapours 90 



a2 



