Lighthouses. Return to an address of the Honourable the House of Commons, dated 15 April 1850;--for, "statement of what measures have been adopted respecting the erection, management and superintendence of lighthouses in the British colonies and possessions (in continuation of Parliamentary Paper, no. 225, of session 1849):" "and, abstract of any returns received from the colonies upon the subject since April 1849." [electronic resource].