CONTENTS. vii 



Page 

 menon wliich occurs on viewing a Figure of a Crystal or Geo- 

 metrical Solid ; — in a Letter to Sir D. Brewster 329 



Mr. R. W. Fox on some Facts which appear to be at Variance 



with the Igneous Hypothesis of Geologists 338 



Mr. J. Nixon's Description of a Repeating Circle, by which 

 any Multiple of an Altitude may be measured from one Ob- 

 servation by the Telescope 340 



Mr. T. Smith's Investigation of certain remarkable and unex- 

 plained Phsenomena of Vision, in which they are traced to 



Functional Actions of the Brain 343 



Mr. J. Phillips on the Lower or Ganister Coal Series of York- 

 shire 349 



Official Documents respecting the Health of the Workmen 

 employed in Cleansing the Public Sewers of Westminster, 

 as affected or not by their Employment, and also during the 

 existence of Malignant Cholera in the Metropolis; together 

 with authenticated Statements relative to the Health of other 

 Workmen exposed to putrid Effluvia. Communicated in a 



Letter from Sir Anthony Carlisle 354 



New Books: — Comparative Account: Population of Great 

 Britain. — Dr. Pearson's Introduction to Practical Astronomy 

 {continued.') — Mr. Tod's Anatomy and Physiology of the Or- 

 gan of Hearing 361—375 



Proceedings of the Royal Society 378 



Royal Astronomical Society 390 



■ Zoological Society 392 



. Cambridge Philosophical Society 400 



Biela's Comet 401 



On Paraffin and Eupion 402 



Occultations of Planets and Fixed Stars by the Moon, in 



November 1832 405 



An Ephemeris of the Stars proper to be observed with Mars, 



at the ensuing Opposition of that Planet {continued) 406 



Meteorological Observations 408 • 



NUMBER VI.- DECEMBER. 



Prof. F'. Rudberg on the Variations which Temperature pro- 

 duces in the Double Refraction of Crystals 409 



Sir D. Brewster on the Action of Heat in changing the Num- 

 ber and Nature of the Optical or resultant Axes of Glau- 

 berite 417 



Capt. Luetke's Account of Experiments with an Invariable 

 Pendulum, during a Russian Scientific Voyage 420 



Mr. G. Fairholmeon the Power possessed by Spiders to escape 

 from an isolated Situation 424 



Prof. M.A.Kupffer's Note on the Mean Temperature and Baro- 

 metric Height of Sitka, on the North-west Coast of America. 427 



Prof. M. A. Kuptter's Note on the Mean Temperature and Mean 

 Barometric Height of Jloulouk, in the Island of Ounaiachka 129 



