D places. The larger light-ships are now using electricity generated by apparatus installed in the vessels. There seems to be a tendency toward the use of more buoys and fewer lighthouses, but the beam-intensities of the latter are increasing. In the hundred years since the Boston Light was built the same great changes wrought by the development of artificial light in other activities of civilization have appeared in th _______________________________________________ Bah-general mailing list [email protected] https://lists.ourproject.org/cgi-bin/mailman/listinfo/bah-general