Articles in the Philosophical Magazine and Annals for June, 

 July, August, September, and October, 1830. 



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

 Andrews (J.). Separation of Baryta or Strontia from Lime. 

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

 Galloway (E.). On the new Paddle-wheel. 



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 H'istory. 



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 

 Teneriffe 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. Sketch of the Struc- 

 ture of the Austrian Alps. 



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

 to Thomson and Berzelius. 



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



Challis (Rev. J.). Attempt to explain theoretically the different 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. 



Dakin (G.). On an improved Electrical Machine. 



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



Children (J. G.). F.R.S. On Ochsenheiraer's Genera of Lepidoptera 



