CONTENTS OF VOL. ITT. FOURTH SERIES. Vll 



Page 

 Mr. M. Donovan on the supposed Identity of the Agent con- 

 cerned in the Phenomena of ordinary Electricity, Voltaic 

 Electricity, Electro - magnetism, Magneto - electricity, and 



Thermo-electricity (continued) 445 



Mr. G. B. Jerrard on the possibility of solving Equations of any 



degree however elevated 457 



Mr. J. J. S3 T lvester's Observations on a New Theory of Multi- 

 plicity. . 460 



Notices respecting New Books : — Mr. R. Grant's History of 

 Physical Astronomy, from the earliest Ages to the middle of 



the Nineteenth Century 468 



Proceedings of the Royal Society 470 



Royal Institution 473 



On the Passive State of Meteoric Iron, by Prof. Wohler .... 477 

 On the Invention of the Stereoscope, by C. Wheatstone .... 478 

 On the Sun Column as seen at Sandwick Manse, Orkney, in 



April 1852, by C. Clouston 478 



Meteorological Observations for April 1852 479 



Table 480 



NUMBER XXL— SUPPLEMENT TO VOL. III. 



Mr. J. P. Joule on the Heat disengaged in Chemical Combina- 

 tions 481 



Prof. Wheatstone's Contributions to the Physiology of Vision. 

 — Part the Second. On some remarkable, and hitherto un- 

 observed, Phsenomena of Binocular Vision (continued). (With 



a Plate.) 504 



Mr. T. S. Davies on Geometry and Geometers. — No. X 523 



The Rev. T. P. Kirkman on the Puzzle of the Fifteen Young 



Ladies 526 



Mr. W. Herapath on early Egyptian Chemistry 528 



Proceedings of the Royal Society of Edinburgh 529 



Royal Institution 535 



Dr. Kemp's Patent for a new Method of obtaining motive power 



by means of Electro-magnetism 541 



Electro-chemical Researches on the Properties of Electrified 



Bodies, by MM. Fremy and Becquerel. 543 



On the Allotropy of Selenium, by M. Hittorf 546 



Meteorological Observation, by P. J. Martin 547 



Index 548 



