Figure 47. — Holmes' alternator at the Souter Point lightiiouse. From La Lumiere electrique, 



October 7, 1882, vol. 7, p. 341. 



Figure 48. — De Meritens' mag- 

 neto generator. From Engi- 

 neering, 1879, vol. 28, p. 372. 



PAPER 30: DEVELOPMENT OF ELECTRICAL TECHNOLOGY IN THE 19TH CENTURY: III 373 



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