LIST OF ILLUSTRATIONS. 



ELECTRICITY. 



PLATE 



Sl'HMARINE Kl.KCTKIC TELEGRAPHS 1 



INDIA-RUBBER COVERING MACHINE 2 ."> 



ELECTRICAL TESTS OF THE MALTA AND ALEXANDRIA TELE- 

 GRAPH 6 7 



MEDITERRANEAN TELEGRAPH MACHINKUY 8 10 



RESISTANCE MEASURER 11 



DEPENDENCE OF ELECTRICAL RESISTANCE ON TEMPERATURE . 1216 



ELECTRIC CURRENT REGULATOR 17 



ELECTRIC CURRENT MEASURER is 



ELECTRIC CURRENT REGULATOI; 19 



KLKCTKIC KUKNACE 20 



HORIZONTAL ELECTRIC LAMP. SOLENOID CURVE ... -21 



SKCO.MI.M;Y MATTERY 22 



DEEP-SEA ELECTRICAL THERMOMETER 25 



MISCELLANEOUS. 



WATER METEK 24 27 



IMPROVED WATER METER 23 



DYNAMO MACHINE. PNEUMATIC TRANSMISSION CIRCUIT 



SYSTEM 29 



BATHOMETER 3032 



HORIZONTAL ATTRACTION METER . 33 



HIGH-PRESSURE VESSELS 3435 



DEPENDENCE OF RADIATION ON TEMPERATURE .... 23 \. 3; 



QUESTIONS INVOLVED IN SOLAR PHYSICS 37 



VOL. II. It 



