CONTENTS. V 



Page 



Mr. J.White's Papers relating to a Design for tlie New London 

 Bridge, on the Principle of Cementitious Architecture {con- 

 tinued) 183 



Mr. W. Sturgeon on Electro-Magnets 195 



Letter from Dr. Henry on a Modified Disinfecting Apparatus 205 



Dr. Wm. Henry's Estimate of the Philosophical Character of 

 Dr. Priestley : , 207 



Analytical Investigation of a Formula which shall express the 

 Relative Importance of a certainNumber of the Boroughs in 

 England and Wales 218 



New Books: — Mr.J. Bryce's Tables of Simple Minerals, Rocks, 

 and Shells — Om Compassets Misviisning. (The Variation of 

 the Compass) 224- 



Proceedings of the British Association for the Advancement 

 of Science 225 



Quarterly Journal of Science — Letter from Dr. Hodgkin sug- 

 gesting Particular Observations of Atmospheric Phaenomena 

 during the present Season 236 



New Patents 237 



Occultations of Planets and fixed Stars by the Moon, in March, 

 1832, Computed for Greenwich, by T. Henderson, Esq.; 

 and circulated by the Astronomical Society — Meteorological 

 Observations 238 



NUMBER LXIV.-APRIL. 



Mr. B. Bevan's Observations on Mr. Barlow's Experiments 



on the Strength of different Kinds of Wood 24<1 



Mr. H. Meikles improved Demonstration that Air expands in 



Geometrical Progression for equal Increments of Heat .... 243 

 Rev. P. Keith on the Susceptibilities of Living Structures. . . . 249 

 Demonstration of the greatest Area of Isoperimetrical Polygons 258 



Mr. S. Sharpe's Table of the Sun's Semi-diameter 259 



Table for reducing to 0° Centigrade (32° Fahr.) the Height of 



the Barometer observed at any other Temperature 260 



Mr. J. White's Papers relating to a Design for the New London 

 Bridge, on the Principle of Cementitious Architecture (con- 

 tinued) 264- 



Mr.W. Sturgeon on the Distribution and Retention of Magnetic 



Polarity in Metallic Bodies 270 



NewBooks:— South-African Quarterly Journal, No. III. From 

 April to July 1830. Edited at the South-African Institution, 



Cape Town 279 



Proceedings of the Geological Society 281 



■ Linnaean Society 285 



i' Zoological Society 288 



Proceedings 



