VI CONTENTS. 



Page 



Mr. Havvorth's Description of New Succulent Plants 271 



Mr. R.C. Taylor on the Geology of East Norfolk; with Remarks 



upon the Hypothesis of ^Ir. Kobberds, respecting the former 



Level of the German Ocean. (With Engravings) continued 277 



Lieut. Beaufoy's Astronomical Observations 1S27 290 



Notices respecting New Books 291 



Proceedings of the Astronomical Society 291 



Royal Society 302 



Linntean Society ;,07 



- Horticultural Society 307 



Royal Institution of Great Britain 3G8 



■ Mechanics' Institution 3(i9 



Description of a Planetarium, or Orrery, on a new Principle, 



put in JMotion by the State of the Atmosphere 310 



Crystallized Litharge — Composition of Nitric Acid 312 



Phosphuretted Hydrogen CJas — Acids discovered in Castor 



Oil— Supposed Chlorate of Manganese in the Native Peroxide 313 

 Arrival of Major Laing at Timbuctoo — Hybernation of the 



Black Ant 314 



C. L. Rumker's Observations on a Comet, made at Paramatta 



—Scientific Books 315 



New Patents 316 



Aurora Borealis , 317 



Meteorological Observations 318 



. by Mr. Howard near London, 



Mr. Giddy at Penzance, Dr. Burney at Gosport, and Mr. 



Veall at Boston , 320 



NUMBER v.— MAY. 



Rev. W. V. Vernon on the Orange Phosphate of Lead S2I 



Mr. Ivory's Remarks on a Memoir by M. Poisson, read to the 

 Academy of Sciences at Paris, Nov. 20, 1826, inserted in 



the Conn, des Terns 1829 324- 



Rev. J. B. Emmett on Capillary Attraction 332 



Mr. Galbraith on the Velocity of Sound 336 



Dr. Burney 's Results of the Meteorological Observations made 

 at Wick in the Northernmost Part of Scotland, published 



in the Philosophical Magazine 339 



Mr, Howldy's Remarks on Mr. Sturgeon's Paper " On the In- 

 flammation of Gunpowder by Electricity " 34'3 



Mr. Teschemacher on Chromate of Silver 345 



Mr. R. C. Taylor on the Geology of East Norfolk ; with Remarks 

 upon the Hypothesis of Mr. Robberds, respecting the former 



Level of the German Ocean [continued) 346 



Corrections in Vlacq's Tables of Logarithms 353 



Mr. Nixon's Theory of the Spirit-Level 354 



Mr. Swainson's Synopsis of the Birds discovered in Mexico by 

 William Bullock, F.L.S. and H.S., and Mr. William Bul- 

 lock, jun. [continued) 364 



Dr. Spurgin's Outlines of a Philosophical Inquiry into the Na- 

 ture and Properties of the Blood ; being the Substance of 



