Sydney Ernest Fryer, Dictionary of National Biography… (1912)
“ The board of Irish lights, however, continued to favour Wigham's system, and in 1878 they installed at Galley Head a powerful quadriform light of his with four tiers of superposed lenses and a 68-jet burner in the focus of each tier. In 1883 the board of trade appointed a lighthouse illuminants committee to consider the relative merits of gas, oil, and electric light. For some years Tyndall had felt that Sir James Douglass had used his influence as engineer to Trinity House for the furtherance of his own patents and to the disadvantage of Wigham's system. ”
