CONTENTS OF N** VI.— New Series. 



LXV. On the Dispersion of Light. By M. Rudberg, of Stock- 

 holm page ^Q\ 



LXVI. Description of a Rain-gauge. By John Taylor, Esq. 

 RR.S.AC. [With a Plate.] 406 



LXVII. Some further Remarks on the Genus Chameleon, with 

 the Description of an undescribed Species. By John Edward 

 Gray, Esq. F.G.S. &c. *08 



LXVII I. A Monograph of the Genus Teredo of Linng, with de- 

 scriptive Characters of the Species in the British Museum. By 

 John Edward Gray, Esq. F.G.S. &c 409 



LXIX. Meteorological Register kept at Funchal, in Madeira, in 

 the Year 1826 ; &c. By C. Heineken, M.D *11 



LXX. On the Integration of Linear Differential Equations having 

 Constant Coefficients and last Term any Function of the Indetermi, 

 nate Quantity x. By John H erapath, Esq 41^ 



LXXL On the Action of Iodine and Fluosilicic Acid. ByM.VAR- 

 viNSKY, Engineer in the Russian Mines 426 



LXXn. On some new double Chroraates. By Mr. Henry 

 SxoKEg -; 427 



LXXIII. On Nitric Acid, and on a peculiar Sulphate of Potash. 

 By R. Phillips, F.R.S. L. & E 429 



LXXIV. Notes on the Geological Structure of Cader Idris. By 

 Arthur Aikin, Esq. F.G.S. &c 433 



LXXV. Notices respecting New Books : — Illustrations of the 

 Geology of Sussex : containing a General View of the Geological 

 Relations of the South -Eastern Part of England ; with Figures and 

 Descriptions of the Fossils of Tilgate Forest. By Gideon Man- 

 tell, F.R.S. Fellow of the Royal College of Surgeons, &c. &c. . . 439 



LXX VI. Proceedings of Learned Societies : Royal Society; Lin- 

 naean Society ; Geological Society ; Royal Geological Society of 

 Cornwall 449—459 



LXXVII, Intelligence and Miscellaneous Articles :— New Form of 

 an Experiment in Electro-Magnetism, by Mr, John Lewthwaite ; Ar- 

 gillaceous Carbonate of Iron; Berthierite, a new Mineral Species; 

 Sternbergite, a new Mineral Species; Jalapia; Glaucolite, a new 

 Mineral Species ; Effects of Oil of Croton on the Eye; Chlorocyanie 

 Acid; Examination of Cinchalona ; Common Sugar existing in the 

 Form of Grains in the Flowers of Rhododendron ponticum; New . 

 Patents ; Meteorological Observations, Table, &c 459—468 



•,• It is requested that all Communications for this Work mny be addressed, 

 pQst pjiid, to the Cure of Mr. R. Taylor, Printer, KcJlyion-Court, Fleet- 

 Street, London. 



