Vm CONTENTS. 



Astronomy. 



Page 



Dr. J. Janssen on the'Total Solar Eclipse of April 5,'1875, observed at Baag- 

 challo (Siam) - 24 



Rev. R. Main's List of Meteors observed at Oxford 24 



Rev. S. J. Perry on the Transit of Venus^ December 8, 1874 24 



Light, Heat, and Blecteicitt. 



Captain W. de W. Abney on the Ratio of the Actinic Power to the Illuminating 

 Power of the Magneto-Electric Light 25 



Dr. J. Janssen on Mirage at Sea 2G 



on the Photographic Revolver, and on the Observations of the 



Transit of Venus made in Japan 26 



Mr. A. Malloch on a Mode of producing a sharp Meridian Shadow 26 



Professor Stokes and Mr. J. Hopkinson on the Optical Properties of a Titano- 

 Silicic Glass 26 



Professor W. F. Barrett on the Effects of Heat on the Molecular Structure 

 of Steel Wires and Rods 27 



Mr. P. Braham's E.xperiments on Magnetized Rings, Plates, and Disks of 

 ILardened Steel 28 



Mr. J. A. Fleming on the Decomposition of an Electrolyte by Magneto- 

 Electric Induction 28 



Dr. J. Janssen on the Position of the Magnetic Equator in the Gulf of Siam 

 and in the Gulf of Bengal 28 



Mr. H. A. Rowland on the Magnetizing Function of Iron, Nickel, and Cobalt 29 



on Magnetic Distribution 29 



Sir W. Thomson on the Effect of Stress on the Magnetism of Soft Iron .... 29 



Meteouologx. 



Professor Henry Hennessy on the Influence of the Physical Properties of 

 Water on Climate 29 



on the possible Influence on Climate of the sub- 

 stitution of Water for Land in Central and Northern Africa 30 



Dr. J. Moffat on the apparent Connexion between Sun-spots, Atmospheric 

 Ozone, Rain, and Force of Wind , 31 



Mr. G. J. Symons on the Rainfall in Monmouthshire and the Severn Valley 

 on July 14th, and on some subsequent Floods in England and Wales .... 31 



CHEMISTRY. 



Address hy A. G. Vernon Hahcourt, M.A., F.R.S., F.C.S., President of 

 the Section 32 



Mr. A. H. Allen on a Method of effecting a Solution of difficultly Soluble Sub- 

 stances 37 



Dr. Henry E. Armstrong on the Nature of Berthelot's Vinylic Alcohol . . 37 



Mr. G. H. Beckett and Dr. C. R. Alder Wright on the Alkaloids of the 

 Aconites 37 



■ on Japanese Camphor 



from Peppermint 38 



