g6 Proceedings. 



" I shall leave to others the task of dealing with the 

 history of the several important applications of dynamo- 

 electric machines for the production of electric light, electro- 

 lytic processes, the transmission of motive power and other 

 purposes. 



" Of far greater interest than the substitution of electric 

 light for gas light in the Society's rooms are the facilities 

 now afforded by the Corporation supply of electricity for 

 increasing the light of natural knowledge by the illustration 

 of communications made to the Society in various branches 

 of experimental philosophy. Of the many uses and mani- 

 festations of the electric supply may be enumerated : — 



1. The arc and incandescent lights. 



2. Heating wires and other calorific phenomena. 



3. Energizing induction coils and producing electric 



oscillations. 



4. Charging powerful electro-magnets. 



5. The action of magnetism on gases. 



6. Diamagnetic polarity and magnecrystallic force. 



7. Reproducing the phenomena of terrestrial mag- 



netism. 



8. Demonstrations in spectrum analysis. 



9. Conversion of electricity into mechanical work. 



10. Electrolysis of chemical compounds. 



11. Reduction of refractory substances in the electric 



furnace. 



12. The artificial formation of minerals. 



13. Demonstrations in biology and physiology. 



14. Lantern projection for microscopic and other 



objects. 

 " Some of the more prominent of these applications of the 

 electric supply I shall be able to demonstrate before the 

 Society, and I have a confident hope that, with the increased 

 facilities afforded to the members for prosecuting philo- 

 sophical research, the Society will be as successful in extend- 



