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Preface
1. Lighthouse construction
2. Lighthouse illumination adapted to the illumination of every azimuth, or of certain azimuths only, by light of equal power, acting either constantly or periodically
3. Azimuthal condensing system for distributing the light unequally in different directions either constantly or periodically
4. Distinctive characteristics of lights
5. The illumination of beacons and buoys
6. The electric light
7. Statistics of lighthouse apparatus
8. Sources of illumination
9. Miscellaneous subjects connected with lighthouses
10. Fog-signals
Appendix
Index.