The shores of the Island, as we have said, are a precipitous wall of rock, whose long, ribbed ledges extend far out into the sea. At high tide these ledges are covered with the smooth blue sea quite up to the precipitous shore. There was a place, however, where the rocky shore shelved over, forming between two ledges a sort of grotto, whose smooth floor of shells and many-colored pebbles was never wet by the rising tide. It had been the delight of Moses when a boy, to come here and watch the gradual rise of the tide till the grotto was entirely cut off from all approach, and then to look out in a sort of hermit-like security over the open ocean that stretched before him. Many an hour he had sat there and dreamed of all the possible fortunes that might be found for him when he should launch away into that blue smiling futurity. It was now about half-tide, and Moses left his boat and made his way over the ledge of rocks toward his retreat. They were all shaggy and slippery with yellow seaweeds, with here and there among them wide crystal pools, where purple and lilac and green mosses unfolded their delicate threads, and thousands of curious little shell-fish were tranquilly pursuing their quiet life. The rocks where the pellucid water lay were in some places crusted with barnacles, which were opening and shutting the little white scaly doors of their tiny houses, and drawing in and out those delicate pink plumes which seem to be their nerves of enjoyment. Moses and Mara had rambled and played here many hours of their childhood, amusing themselves with catching crabs and young lobsters and various little fish for these rocky aquariums, and then studying at their leisure their various ways. Now he had come hither a man, to learn the secret of his life. Moses stretched himself down on the clean pebbly shore of the grotto, and drew forth Mr. Sewell's letter. CHAPTER XXVI DOLORES Mr. Sewell's letter ran as follows:-- MY DEAR YOUNG FRIEND,--It has always been my intention when you arrived at years of maturity to acquaint you with some circumstances which have given me reason to conjecture your true parentage, and to let you know what steps I have taken to satisfy my own mind in relation to these conjectures. In order to do this, it will be necessary for me to go back to the earlier years of my life, and give you the history of some incidents which are known to none of my most intimate friends. I trust I may rely on your honor that they will ever remain as secrets with you. I graduated from Harvard University in ----. At the time I was suffering somewhat from an affection of the lungs, which occasioned great alarm to my mother, many of whose family had died of consumption. In order to allay her uneasiness, and also for the purpose of raising funds for the pursuit of my professional studies, I accepted a position as tutor in the family of a wealthy gentleman at St. Augustine, in Florida.