Xiv CONTENTS. 



Page 



Third. On decomposition of metals by Voltaic electricity On 

 charcoal chlorine, to be published in some scientific peri- 

 odical work to induce trial. 



Fourth. On the refracted homogeneous rays of solar light Their 

 effects on matter, particularly with reference to magnetic in- 

 fluences. 



Fifth. On magnets of ascertained power By oxygen Positive 

 electricity Red ray Of solar and artificial light To decide 

 the identity of the three latter. 



Sixth. On producing magnetic power by the blue ray and violet 

 end of the spectrum, with other matter described. 



Seventh. On the inflammation of the gases for the production of 

 light in proportion, according to 9th article of this theory 

 and with modification, to obtain the most approved result to 

 confute or establish this theory . . .121 



Appendix . . . . . .123 



Original prospectus Printed in Newcastle- upon-Tyne, 1818 In Lon- 

 don, 1820 Explanation of its object with observations Original 

 theory as printed and circulated, 1818. 



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