Chapter I.
EARLY LIGHTHOUSES.
Origin of Lighthouses—Beacon Fires—Character of the Early Watch-towers—Cressets—Colossus of Rhodes—The Pharos of Alexandria—Epitome of Ancient Lighthouses—The Tour de Corduan.
There is perhaps nothing better calculated to impress us with the skill and ingenuity of man, and the power which scientific knowledge imparts, than the sight of one of the beautiful Lighthouses of modern times. Rising, it may be, from the point of a jutting rock amidst the dashing and roaring of the breakers, it is exposed to the utmost fury of the storm: graceful in its proportions, and uniting the elements of security and beauty, it resists the terrific assaults of the winds and waves, and bears aloft to the help of the tempest-tossed mariner, the warning light that bids him shun the rocky shore. The skill now attained in the construction of Lighthouses has been of slow and difficult acquirement, the fruit of much patient and persevering toil, and of many painful experiences: it will, therefore, be interesting to trace the steps by which a result so important in the history of commerce has been successfully achieved.
At a very early period it was customary to light up beacon-fires along the most frequented coasts. These fires were kindled on the summits of lofty towers, which served the double purpose of lighthouses, and temples dedicated to the gods. Here sacrifices were offered to appease the storm, and prayers were made for the safety of the mariner. Thus these lighthouse-towers were invested with a sacred character: their beacon-fires were said to be inextinguishable; their priests performed the rites and practised the arts of divination, inquiring into the success of a proposed voyage, and making votive offerings for past deliverances.
Hence it may naturally be supposed, that within these watch-towers was to be found most of the nautical knowledge of the time; that here were deposited such observations on the heavenly bodies as were attainable at that early period; also rude charts of the coast, originally perhaps traced upon the walls, and afterwards formed into primitive maps by being transferred and extended upon papyrus leaves. Here too the young seaman might come for instruction in the art of navigation, simple and imperfect as it must have been. Here too the aged seaman buffetted by the storm might seek refuge from its fury, obtain rest and refreshment, and instructions for the continuance of his voyage.
These ancient lighthouses appear to have consisted of a tower of masonry of large dimensions; circular or square in form; containing numerous apartments and a battlemented top, within which was raised a kind of altarpiece covered with a plate of brass. Upon this brazen hearth a chauffer of curious workmanship was placed: it was in some cases supported upon dolphins; and the grating was decorated with foliage and emblematical devices.
The materials employed for maintaining a light in this chauffer were, doubtless, similar to those in the ancient cressets, or lights of the watch, which were in use not only as beacons, but as common street-lights, before either oil or gas-lights were known. Some of these cressets were formed of a wreathed rope, smeared over with pitch, and placed in an elevated cage of iron, others contained combustible materials in a hollow pan. Occasionally these primitive street-lights were placed at the summit of a pole, from either side of which, projecting pieces of wood formed a ready mode of ascent to trim the light, and obviated the need of a ladder for that purpose.
Before the discovery of the magnetic needle or its application at sea, the towers above referred to were very numerous; so much so that nearly every promontory is said to have been decorated with its lighthouse or temple, and this was the more necessary, since the mariner dared not venture out of sight of the coast, but followed with attention all its little windings and bendings.