CONTENTS OF VOL. III. 



(FOURTH SERIES.) 



NUMBER XV.— JANUARY 1852. 



Page 

 Dr. Schlagintweit's Observations in the Alps on the Optical 



Phenomena of the Atmosphere. (With a Plate.) 1 



Sir D. Brewster's Description of several New and Simple Ste- 

 reoscopes for exhibiting, as solids, one or more representa- 

 tions of them on a Plane. (With a Plate.) 16 



Sir D. Brewster's Account of a Binocular Camera, and of a 

 Method of obtaining Drawings of Full Length and Colossal 

 Statues, and of Living Bodies, which can be exhibited as 



Solids by the Stereoscope 26 



Sir D. Brewster's Notice of a Chromatic Stereoscope 31 



Mr. J. P. Joule's Account of Experiments with a powerful Elec- 

 tro-magnet. 32 



Mr. R. Phillips on Frictional Electricity 36 



Dr. Woods on the Heat of Chemical Combination 43 



Prof. Challis on the Cause of the Aberration of Light 53 



Sir D. Brewster's Explanation of an Optical Illusion 55 



Notices respecting New Books : — Mr. R. Hunt's Elementary 

 Physics ; Paterson's Calculus of Operations ; Four Intro- 

 ductory Lectures delivered at the Government School of 

 Mines and of Science applied to the Arts ; Museum of Prac- 

 tical Geology 57 



Proceedings of the Royal Society 67 



Royal Astronomical Society 71 



On the production of Instantaneous Photographic Images, by 



H. F. Talbot, Esq 73 



On Copper Crystallized by means of Phosphorus, byF. Wohler 77 

 On the Accidental Colours which result from looking at White 



Objects, by M. D. M. Seguin 77 



Extraordinary Spots on the Sun 78 



Obituary. — Mr. Samuel Veall 79 



Meteorological Observations for November 1851 79 



Meteorological Observations made by Mr. Thompson at the 

 Garden of the Horticultural Society at Chiswick, near 

 London ; by Mr. Veall at Boston ; and by the Rev. C. 

 Clouston at Sandwick Manse, Orkney 80 



