"I expose to you my weaknesses, my faults, my passions. There is but one thing of which I have the slightest apprehension. You may sometimes hear me blamed for deeds which you know are right. You will hear my lot in life envied, as apparently all that the reasonable wishes of any being could desire. And sometimes, too, busy Scandal, which honors even the most insignificant with her notice, will glance at me. Your generous, affectionate heart will prompt, I well know, on those occasions, some defence of your friend. But never give way to it; never whisper to the winds that she has any trials. It will necessarily involve the question, What are they? You are the only person to whom I ever communicated them, and my conscience almost reproaches me for it. I try to think my peculiar loneliness sanctions it, but my very uneasiness proves it was not strictly right, and I would not for worlds sin farther. You will bear with me. All this is foolish, but I must say it. I defy any one to tell from my appearance that I have not every thing to make me happy. I have much, and I am happy. My little trials are essential to my happiness. They teach me to value the only true sources of enjoyment this life can afford,--the affection of the good, the cultivation of the better feelings of the soul in the service of their Creator, and the joyful hope of a better, purer state of existence. Blessings and peace go with you, and pure, unalloyed felicity be your portion for ever. "MARY." In the latter part of the year 1814, Mary left Boston for Hingham, to be again in the family and under the tuition of the Misses Cushing. Of her character then, and the renewed impression made upon her instructors, a letter which we have recently received from one of them will give the best idea; though, from regard to the writer's wishes, we quote but a small part.