It is not for the timid to attempt a ramble among the rocks on the Atlantic side at low tide. He should be sure-footed and supple-jointed who undertakes it, with an eye to estimate the exact distance where the incoming surf-wave is to break. The illusions produced in the mind by the great waves that roll past are not the least striking sensations experienced. The speed with which they press in, and the noise accompanying their passage through the gullies and rents of the shore, contribute to make them seem much larger than they really are. It was only by continually watching the waves and measuring their farthest reach that I was able to await one of these curling monsters with composure; and even then I could not avoid looking suddenly round on hearing the rush of a breaker behind me; and ever and anon one of greater volume destroyed all confidence by bursting far above the boundaries the mind had assigned for its utmost limits.

Nothing struck me more than the idea of such mighty forces going to pure waste. A lifting power the Syracusan never dreamed of literally throwing itself away! An engine sufficient to turn all the machinery in Christendom lying idle at our very doors. What might not be accomplished if Old Neptune would put his shoulder to the wheel, instead of making all this magnificent but useless pother!

I noticed that the waves, after churning themselves into foam, assumed emerald tints, and caught a momentary gleam of sapphire, melting into amethyst, during the rapid changes from the bluish-green of solid water to its greatest state of disintegration. The same change of color has been observed in the Hebrides, and elsewhere.

The place that held for me more of fascination and sublimity than others was the bluff that looks out upon the vast ocean. I was often there. The swell of the Atlantic is not like the long regular roll of the Pacific, but it beats with steady rhythm. The grandest effects are produced after a heavy north-east blow, when the waves assume the larger and more flattened form known as the ground-swell. I was fortunate enough to stand on the cliff after three or four days of "easterly weather" had produced this effect. Such billows as poured with solid impact on the rocks, leaping twenty feet in the air, or heaped themselves in fountains of boiling foam around its base, give a competent idea of resistless power! The shock and recoil seemed to shake the foundations of the island.

Upon a shelf or platform of this cliff a young lady-teacher lost her life in September, 1848. Since then the rock on which she was seated has been called "Miss Underhill's Chair." Other accidents have occurred on the same spot, insufficient, it would seem, to prevent the foolhardy from risking their lives for a seat in this fatal chair.

There are circumstances that cast a melancholy interest around the fate of Miss Underhill. In early life she had been betrothed, and the banns, as was then the custom, had been published in the village church. Her father, a stern old Quaker, opposed the match, threatening to tear down the marriage intention rather than see his daughter wed with one of another sect. Whether from this or other cause, the suitor ceased his attentions, and not long after took another wife in the same village.

The disappointment was believed to have made a deep impression on a girl of Miss Underhill's strength of character. She was a Methodist, deeply imbued with the religious zeal of that denomination. Hearing from one who had been at the Isles of Shoals that the people were in as great need of a missionary as those of Burmah or of the Gold Coast, it became an affair of conscience with her to go there and teach.

She came to the islands, and applied herself with ardor to the work before her, a labor from which any but an enthusiast would have recoiled. It is asserted that no spot of American soil contained so debased a community as this.

It was her habit every pleasant day, at the close of school, to repair to the high cliff on the eastern shore of Star Island, where a rock conveniently placed by nature became her favorite seat. Here, with her Bible or other book, she was accustomed to pass the time in reading and contemplation. She was accompanied on her last visit by a gentleman, erroneously thought to have been her lover, who ventured on the rock with her. A tidal wave of unusual magnitude swept them from their feet. The gentleman succeeded in regaining his foothold, but the lady was no more seen.

Search was made for the body without success. A week after the occurrence it was found on York Beach, where the tide had left it. There was not the least disorder in the ill-fated lady's dress; the bonnet still covered her head, the ear-rings were in her ears, and her shawl was pinned across her breast. In a word, all was just as when she had set out for her walk. The kind-hearted man who found the poor waif took it home, and cared for it as if it had been his own dead. An advertisement caught the eye of Miss Underhill's brother. She was carried to Chester, New Hampshire, her native place, and there buried.