BOOK II.
THE SCIENCE OF LIGHTHOUSES.
I. How they are Administered, 49 II. Geographical Distribution of Lighthouses, 62 III. The Illuminating Apparatus of Lighthouses, 68 IV. The Interior of a Lighthouse, 95
THE SCIENCE OF LIGHTHOUSES.
I. How they are Administered, 49 II. Geographical Distribution of Lighthouses, 62 III. The Illuminating Apparatus of Lighthouses, 68 IV. The Interior of a Lighthouse, 95