CONTENTS. 



PAGE 



CORRELATION OF PHYSICAL FORCES i 



CONTINUITY . 18 1 



EXPERIMENTAL INVESTIGATIONS. 



NITRIC ACID VOLTAIC BATTERY 231 



VOLTAIC POLARISATION 234 



CHEMICAL INACTION OF AMALGAMATED ZINC . . . 236 

 A VOLTAIC PROCESS FOR ETCHING DAGUERREOTYPES . .241 



ELECTRO -NITRURETS 247 



VOLTAIC SYNTHESIS OF WATER 249 



VOLTAIC REACTION 250 



GAS VOLTAIC BATTERY 253 



VOLTAIC ACTION OF PHOSPHORUS, SULPHUR, AND HYDRO- 

 CARBONS . 285 



THERMOGRAPHY AND VOLTAISM . . . . . .301 



MOLECULAR VOLTAIC PHENOMENA . . . . . 302 



VOLTAIC IGNITION AND THE DECOMPOSITION OF WATER INTO 



ITS CONSTITUENT GASES BY HEAT 306 



SUPPLEMENTARY PAPER ON THE SAME SUBJECT. . . 330 



EFFECT OF SURROUNDING MEDIA ON VOLTAIC IGNITION . 336 



ELECTRICITY AS A MOTIVE POWER . . . . . 350 



MOLECULAR MOTION BY MAGNETISM 354 



PRODUCTION OF HEAT BY MAGNETISM . . . . 355 



