. Bulletin. Science. Figure 27.—Davis' first version of Page's magneto generator. From Charles Page, "New Magnetic Electrical Machine . . ," American Journal of Science, July 1838, vol. 34, p. Figure 28.—Davis' improved version of Page's magneto generator, shown here ringing a bell. From D. Davis, Manual of Magnetism, Boston, ed. 13, 1869, p. 281. current collectors were rollers that touched the commutator bars; they were placed about 60° apart, with their positions controlled by the speed of rotation. In February 1857, Holmes suggested a possible application for the new electr
. Bulletin. Science. Figure 27.—Davis' first version of Page's magneto generator. From Charles Page, "New Magnetic Electrical Machine . . ," American Journal of Science, July 1838, vol. 34, p. Figure 28.—Davis' improved version of Page's magneto generator, shown here ringing a bell. From D. Davis, Manual of Magnetism, Boston, ed. 13, 1869, p. 281. current collectors were rollers that touched the commutator bars; they were placed about 60° apart, with their positions controlled by the speed of rotation. In February 1857, Holmes suggested a possible application for the new electric light system. While considerable progress had been made during the 19th century in increasing the safety of marine commerce, the measures taken were still insufficient. Several decades earlier the Fresnel lens system had been added to the improved Carcel lamp, and new fuels had been discovered that gave a brighter light; although the efTectiveness of the lighthouses was thereby increased, they were still inadequate. In 1867 the British Board of Trade reported that in one year 1,333 lives and 2,513 vessels were lost in the inland and coastal waters of Great Britain.^* Holmes submitted his suggestion to Trinity House, the agency responsible for lighthouses along the coast of England, and proposed to the Elder Brethren of the organization that the coinbination of arc-light and magnetoelectric machines be used for lighthouses. Although Faraday, who was the scientific advisor to Trinity House at the time, had not been previously convinced of the practicality of the electric light, Holmes so persuaded him that, in May 1857, John 3* A. G. Findlay, "On the Progress of the English Lighthouse System," Journal oj the Society of Arts, 1858, vol. 6, pp. 238-249; Cosmos, 1868, ser. 3, vol. 3, pp. 691-693. 352 BULLETIN 228: CONTRIBUTIONS FROM THE MUSEUM OF HISTORY AND TECHNOLOGY. Please note that these images are extracted from scanned page images that may have been digitall
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