viii CONTENTS. 



Page 

 Sir D. Brewster's Observations on the Isothermal Lines on the 

 North-west Coast of America, as deduced from tlie Results 



in the two preceding Articles 4)31 



Rev. B. Powell's Further Remarks on. Experiments relative to 



the Interference of Light 4-33 



Sir D. Brewster's Account of a curious Ciiinese Mirror, which 

 reflects from its polished Face the Figures embossed upon 



its Back 438 



Prof. Botto's Notice on the Chemical Action of the Magneto- 

 electric Currents 441 



Dr. Fit ton's Notes on the History of English Geology (continued) 442 

 New Books : — Dr. Pearson's Introduction to Practical Astro- 

 nomy Bevan's Guide to the Carpenter's Rule .... 450 — 457 



Proceedings of the Royal Astronomical Society 457 



Zoological Society 460 



■ Linnaean Society 465 



E.W.B. on certain Points in the Natural History of the Papuans, 



or Asiatic Negros 466 



Questions as to the Continuation of metalliferous Veins from 



primary into secondary Formations 469 



Mr. J. O. N. Rutter's Notice of a new Oxy-hydrogen Blow- 

 pipe Apparatus 470. 



Mr. R. W. Fox's Notice of a Marine Deposit in the Cliffs near 



Falmouth 471 



Mr. B. Bevan's Inquiries respecting the Dimensions and Value 

 of the local Measures in common use at Covent Garden 



Market 472 



An Ephemeris of the Stars pi-oper to be observed with Mars, 



at the present Opposition of that Planet 473 



Occultations of Planets and fixed Stars by the Moon, in De- 

 cember 1 832 474 



Meteorological Observations 475 



Index 476 



PLATES. 



Plate I. Illustrative of Sir David Brewstek's Paper on Coloured Fringes, 

 and Mr. Sturgeon's Paper on the Distribution of Magnetic Polarity in 

 Metallic Bodies. 



Plate U. Illustrative of Dr. Fitton's Notes on the History of English 

 Geology. 



ERRATA. 



Page 156, line 2.5, for coming read common. 



157, — '27, for Plate I. reud Plate II. 



165, — ->/'"' chlorate of potash read chlorate of lime. 



167, — •»,/'"• 31-2910 read 81-2910. 



