CONTENTS OF VOL. XXXII. — THIRD SERIES. VU 



Piige 



Mr. T. S. Davies on Geometry and Geometers 419 



Mr. J. Cockle on certain Researches of Murphy 421 



Mr. W. J. Kenwood's Abstract of Meteorological Observations 

 made during the year 1847 at Gongo Soco, in the interior of 



Brazil 422 



Dr. T. Andrews on the Heat disengaged during the Combination 



of Bodies with Oxygen and Chlorine {concluded) 426 



Mr. E. L. Garbett's Description of some ParheHa seen at Portsea 

 on the 29th of March 1848 ; with some Remarks on these 



Phsenomena generally. (With a Plate.) 434 



Prof. De Morgan on the Additions made to the Second Edition 



of the Commercium Epistolicmn 446 



The Law of the Nutrition of Animals pointed out by Dr. R. 



D. Thomson, illustrated by Dr. F. Knapp 456 



Dr. R. Hare's Objections to the Theories severally of Franklin, 

 Dufay and Ampere, with an attempt to explain Electrical 

 Phsenomena by Statical or Undulatory Polarization 461 



NUMBER CCXVIIL— SUPPLEMENT TO VOL. XXXII. 



Dr. R. Hare's Objections to the Theories severally of Franklin, 

 Dufay and Ampfere, with an attempt to explain Electrical 

 Phsenomena by Statical or Undulatory Polarization {concluded) 481 

 Sir D. Brewster's Observations on the Elementary Colours of 



the Spectrum, in reply to M. Melloni 489 



The Rev. J. Challis on the Velocity of Sound, in Reply to the 



Astronomer Royal 4 94 



Prof. E. Wartmann on some New Lines in the Solar Spectrum 499 

 Mr. J. Glaisher's Remarks on the Weather during the Quarter 



ending March 31, 1848 506 



Notices respecting New Books : — Herschel's Astronomical 

 Observations made at the Cape of Good Hope ; Bell's Ele- 

 ments of Plane Geometry ; Tate's Principles of Geometry . . 518 



Proceedings of the Royal Society 537 



On the advantage of Electrotyping Daguerreotype Plates .... 541 



On the Acids of Pines, by M. Aug. Laurent 542 



Action of Zinc on Selenious Acid 544 



Liebenerite — a new Mineral 544 



Meteorological Observations for April 1847 545 



Table 546 



Index 547 



