CONTENTS of N° 229.— Fourth Series. 



XXI. On testing Telegraph Cables during the process of Sheathing. 



By Louis Schwendler page 1 69 



XXII. On a Connexion between Crystalline Form and Chemical 

 Constitution, with some inferences therefrom. By James D. Dana. 178 



XXIII. The Conic Theory of Heat considered in connexion with 

 General Sensation and the three senses of Touch, Taste, and Smell. 



By the Rev. J. B. Harbord, M.A « 185 



XXIV. On the Connexion between Comets and Meteors. By G. 

 Johnstone Stoney, M.A., F.R.S 188 



XXV. On the Tension of Liquid Films. By M. G. Van der 

 Mensbrugghe 192 



XXVI. On the Radiant Spectrum. By Sir David Brewster, 

 K.H.,F.R.S 202 



XXVII. On the Specific Heat of Gases for Equal Volumes under 

 Constant Pressure. By Dr. Alexander Natjmann 205 



XXVIII. Some further Remarks on the Influence of the Full Moon 



on Cloud. By William Ellis, F.R.A.S 218 



XXIX. Chemical Notices from Foreign Journals. By E. Atkin- 

 son, Ph.D„ F.C.S 220 



XXX. On the so-called " Inactive " Condition of Solids. By 

 Charles Tomlinson, F.R.S 229 



XXXI. Proceedings of Learned Societies : — 



Royal Society: — Mr. A. Claudet on a Self-acting Focus- 

 Equalizer ; Prof. Stokes on the Internal Distribution of Mat- 

 ter which shall produce a given Potential at the Surface of a 

 Gravitating Mass ; Mr. T. Graham on the Occlusion of Hy- 

 drogen Gas by Meteoric Iron 231-241 



XXXII. Intelligence and Miscellaneous Articles : — 



On a Photometer for Measuring the Transparence of the Air, by 

 M. A. de la Rive 241 



On the Laws which govern the general distribution of Heat over 

 the Earth, by Pliny Earle Chase 244? 



On the spontaneous Change of a Liquid Cylinder into Isolated 

 Spheres, by Dr. F£lix Plateau 246 



%* It is requested that all Communications for this Work may be addressed, 

 post-paid, to the Care of Messrs. Taylor and Francis, Printing Office, Red 

 Lion Court, Fleet Street, London. 



