CONTENTS OF VOLUME II. 



PAPERS. 

 ELECTRICITY. 



PAGE 



Ox AN IMPROVED ELECTRIC TELEGRAPH 3 



ON THE PROGRESS OF THE ELECTRIC TELEGRAPH . . . . 16 



OUTLINES OF THE PRINCIPLES AND PRACTICE INVOLVED IN 

 DEALING WITH THE ELECTRICAL CONDITIONS OF SUBMARINE 

 ELECTRIC TELEGRAPHS, BY WERNER AND C. W. SIEMENS . 47 



DESCRIPTION OF A MACHINE FOR COVERING TELEGRAPH WIRES 

 WITH INDIA-RUBBER 05 



ON A NEW RESISTANCE THERMOMETER 84 



ON THE ELECTRICAL TESTS EMPLOYED DURING THE CONSTRUCTION 

 OF THE MALTA AND ALEXANDRIA TELEGRAPH, AND ON IN- 

 SULATING AND PROTECTING SUBMARINE CABLES . . . 90 

 See also OBSERVATIONS ON THE ELECTRICAL RESISTANCE 

 AND ELECTRIFICATION OF SOME INSULATING MATERIALS 

 UNDER PRESSURE UP TO 3,000 ATMOSPHERES, Brit. Assoc. 

 Rep. 18G3, pp. 688-GW. 



and ON THE OUTER CQYERING OF DEEP SEA CABLES, Brit. 

 Assoc. Rep. 1865 (Se^ pp. 187-190. 



ON THE CONVERSION OF DYNAMICAL INTO ELECTRICAL FpRCE 

 WITHOUT THE AID OF PERMANENT MAGNETISM . . . 119 



ON A RESISTANCE-MEASURER 121 



ON IRON TELEGRAPH POLES 129 



THE STEAMSHIP Faraday AND HER APPLIANCES FOR CABLE 

 LAYING 137 



ON THE DEPENDENCE OF ELECTRICAL RESISTANCE ON TEMPERA- 

 TURE 142 



See aUo THE BAKERIAN LECTURE, ON THE INCREASE OF 

 ELECTRICAL RESISTANCE IN CONDUCTORS WITH RISE 

 OF TEMPERATURE, AND ITS APPLICATION TO THE MEASURE 



