Dear Friends, -I am beginning a new book like an old sermon; but, as you know, I have been so accustomed to preach all my life, that whatever I say or write will more or less take the shape of a sermon; and if you had not by this time learned at least to bear with my oddities, you would not have wanted any more of my teaching. And, indeed, I did not think you would want any more. I thought I had bidden you farewell. But I am seated once again at my writing-table, to write for you-with a strange feeling, however, that I am in the heart of some curious, rather awful acoustic contrivance, by means of which the words which I have a habit of whispering over to myself as I write them, are heard aloud by multitudes of people whom I cannot see or hear. I will favour the fancy, that, by a sense of your presence, I may speak the more truly, as man to man