CONTENTS OF VOL. XVI. 



(FOURTH SERIES.) 



NUMBER CIV.— JULY 1858. 



Page 

 The Astronomer Royal on the Mechanical Conditions of the 



Deposit of a Submarine Cable 1 



Mr. W. R. Grove on the Striae seen in the Electrical Discharge 



in vacuo 18 



M. J. Plateau's Experimental and Theoretical Researches on 

 the Equilibrium Figures of a Liquid Mass without Weight. 



— Fourth Series 23 



Mr. W. Gravatt on the Atlantic Cable 34 



Dr. W. Odling on the Doctrine of Equivalents 37 



Prof. Clausius on the Nature of Ozone 45 



Proceedings of the Royal Society : — 



Major- General Edward Sabine on Hourly Observations of 



the Magnetic Declination 51 



Dr. J. P. Joule on the Expansion of Wood by Heat .... 54 

 • The Rev. T. P. Kirkman on the Partitions of the r-Pyramid. 54 



Dr. W. B. Herapath on the Cinchona Alkaloids 55 



Dr. J. H. Gladstone on the Chemical Action of Water on 



Soluble Salts 66 



Proceedings of the Cambridge Philosophical Society : — 



The Rev. J. Power on the Theory of Polarized Fasciculi, 



commonly known as Haidinger's Brushes 69 



Prof. Stokes on the Dicontinuity of Arbitrary Constants. . 71 

 Proceedings of the Geological Society : — 



Dr. J. W. Dawson on the Lower Carboniferous Coal- 

 measures of British America 72 



Mr. E. W. Binney on the Structure of Stigmaria ficoides . 73 

 Mr. J. Morris on a New Fossil Fern from Worcestershire. 74 

 Prof. A. C. Ramsay on some of the Glacial Phsenomena 



of Canada 74 



Mr. G. P. Scrope on Lamination and Cleavage 75 



Microscopic Observations on the Electric Spark, by R. Fabbri. 77 

 On the origin of Felspars, and on some points of Chemical Li- 

 thology, by T. Sterry Hunt, Esq 78 



NUMBER CV. -AUGUST. 



Mr. J. A. Broun on certaiu Results of Magnetical Observations. 81 

 Mr. D. Vaughau on the Sun's Spots 100 



