Articles in the Philosophical Magazine and Annals for June^ July, 

 August, September, and October, 1830, and November 1831. 



Vernon (Rev. W, V,) F.R.S. Chemical Examination of artificial Brucite. 

 Herapath (W.). On the Combustion of the Diamond. 

 Schmidt (Dr. E.). On the Dimensions of the Earth. 

 Ivory (J.) F.R.S. On the Figure of the Earth. And, On the shortest Di- 

 stance between two Points on the Earth's Surface. 

 Lubbock (J. W.) F.R.S. On the Census. 

 Farey (J.). On Improvements in the Steam-engine. 

 Taylor (J.) F.R.S. On the Duty of Steam-engines in Cornwall. 

 MacLeay (W.S.) F.L.S. On the Dichotomous Method in Natural History. 

 Roget (P. M.) Sec. R.S. Letter in refutation of an alleged Inaccuracy in 



the Minutes of the Council of the Royal Society. 

 Gilbert (Davies) Pres. R.S. On the same subject. 

 Babbage (C). F.R.S. Lucasian Professor of Mathematics, Cambridge, 



on the same Subject. 

 Nixon (J.). On the Measurement (by Trigonometry) of the Heights of 



the principal Hills of Swaledale, Yorkshire. 

 Galbraith (W.) M.A. On the Obliquity of the Ecliptic. 

 Witham (H.) F.G.S. On the Vegetable Fossils found at Lennel Braes, 



near Coldstream, upon the Banks of the River Tweed. 

 Bevan (B.). On the Power of Horses. 

 Alison (R. E.). Narrative of an Excursion to the Summit of the Peak of 



TeneriflFe in February 1829. 

 De la Beche (H. T.) F.R.S. On the Geographical Distribution of Organic 



Remains in the Oolite Series of England and France. 

 Sabine (E.) Capt. R.A. Sec. R.S. Notices occasioned by the Perusal of 



a late Publication by Mr. Babbage. 

 Rumker (C). Elements of the Comet in Pegasus ; with Observations and 



Elements of the same Comet, by M. Valtz, of Nimes. 

 Fleming (Rev. Dr.). Note on Mr. MacLeay's Abuse of the Dichotomous 



Method in Natural History. 

 Sedgwick (Professor) and Murchison (R. I.), Esq. Pres. G.S. Sketch of the 



Structure of the Austrian Alps. 

 Prideaux (J.). On the mean Atomic Weights of Simple Bodie», according 



to Thomson and Berzelius. 

 Yarrell (W.) F.L.S. On a new Species of Swan. 

 Challis (Rev. J.). Attempt to explain theoretically the diflFerent Refran- 



gibility of the Rays of Light. 

 Noggerath (Prof. J.). On the Magnetic Polarity of two Rocks of Basalt 



near Niirburg in the Eifel. 

 Meikle (H.). On the CEconomy of the Steam-engine. 

 Conybeare ( Rev. W. D. ) . On Mr. Lyell's " Principles of Geology." 

 Squire (T.). On the computed times of a late Occultation of Aldebaran. 

 Sharpe (S.). On the Solid of greatest Attraction. 

 Children (J. G.) F.R.S. On Ochsenheimer's Genera of Lepidoptern. 

 Berzelius (M.). On Vanadium. 

 Nixon (Mr.). On his Horizon Sector. 

 Turner (Dr.). On Oxalic Acid. 

 Daniell (Prof.). On his New Register-Pyrometer. 

 Henwood (W. J.). On a Geological Survey of the Mines of Cornwall. 

 Henry (Dr.). On a Substitute for Quarantine. 



