At first, fires burning at the tops of lighthouses were the only signals and guides at night. Then came the use of oil in lamps, with reflectors constructed for the purpose. At first in this country fish oil was used, and after that sperm oil. Within the last ten years refined petroleum has been almost universally adopted for lighthouses in the United States. At present about a million gallons are used in a year. We have only a few electric lights, though two are now in use on the Atlantic coast and two or three upon the lakes. In late years commerce has been rapidly extended. The merchant marine of the nations has grown to gigantic proportions. The amount of travel not only coastwise but across the ocean for pleasure and profit has become enormous. The nations are coming closer together and becoming better acquainted with each other. All this promotes civilization, and will ere long, it is to be hoped, operate to prevent international wars. England has many famous lighthouses. Great Britain is an island and her coast shows a continuous series of indentations. Perhaps the most famous of her lighthouses is the Eddystone Light, a few miles off from Plymouth. If you will look on your map of Great Britain you will find that the county of Northumberland is the extreme northern end of England, bordering on the North Sea and adjoining the southeast corner of Scotland. Off that coast you will see a little group of islands called the Farne Islands. At low tide there are twenty-five of them. On one of these little islands, early in the present century, stood the Longstone Lighthouse. It was a solitary place, and sometimes weeks would pass without any communication with the mainland. The keeper of this light was William Darling, a man of intelligence, who gave a fair education to each of his large family of children. One of these was a daughter whose name was Grace. Think what the youth of an intelligent girl would be on one of the Farne Islands. They are extremely desolate, are covered with rocks, and have very little vegetation and very little animal life except sea fowl.