1851 Great Exhibition: Official Catalogue: Class VII.: George Wells
From Graces Guide
82 WELLS, GEORGE, Admiralty Office — Inventor.
Universal telegraphic lighthouse, intended to prevent mistake as to its identity; this is accomplished by cutting four or more apertures in the present buildings just below the lantern, and fitting the openings with ground plate glass painted so as to leave the illuminated initial of the particular lighthouse distinct. The figure represents the proposed lighthouse.
[Owing to the difficulty of identifying lights on a coast, the least number that can be employed is the best; but if some distinguishing mark can be fixed to a lighthouse, by which all possibility of mistake is prevented, some objections to frequent lights would be removed.— S. C.]
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