Thirteen years have elapsed; and I propose to fulfil my engagement, by expressing, in the form of the present little volume, the views which I now entertain in regard to the claims of foreign lands. To you, my beloved classmates, the book is specially addressed; and if I use a frankness and freedom, which might possibly be construed into presumption, if I were addressing strangers and elder brethren, I am sure that I shall fall under no such imputation when communicating my thoughts to you. I wish to express my thoughts familiarly, as we used to do to each other, and at the same time with the earnestness and solemnity which one ought always to feel when pleading for the perishing heathen. A free, full, and earnest discussion of such sentiments as those contained in this book, had no small influence, under God, in preparing the way for that extensive work of grace at these islands, which has been denominated the Great Revival. At the General meetings of the mission in the month of May of 1836 and 1837, the main doctrines of this volume were thoroughly canvassed, and with deep effect upon every member present. Our feelings were enlisted, our hearts were warmed, and our thoughts were absorbed by the great topic of the world's conversion. The theme, in all its amazing import and solemn aspects, was allowed to take possession of our souls. It gave importunity to prayer, earnestness and unction to our conversation and sermons, and zeal, energy, and perseverance to every department of our work; and the result was soon apparent in the wide-spread and glorious revival. It can almost be said, therefore, that the main sentiments of this volume have received the impress of the Divine approbation. In the fall of 1837, I was constrained by family afflictions and the failure of my own health, to embark for the United States. As I began to breathe the bracing air of Cape Horn, my strength in a measure revived, and having no other employment on board ship, I sketched the outlines of most of the chapters of this little volume. My heart was full of the theme in the discussion of which I had taken part before my embarkation, and I penned my thoughts freely, amidst the tossings of the ship and the care of two motherless children. On my arrival in the United States, I revised and filled up the outlines I had sketched, and delivered them, in connection with various historical lectures, at several places, as Providence gave me opportunity. Now, having returned to these islands, I have thought best to give the chapters a second revision, to dedicate the whole to you, and with the help of the press to send you each a copy, accompanying it with my prayers and my most affectionate salutations. And may I not expect, beloved classmates, that you will read the book with candor, weigh well its arguments, admit its entreaties to your hearts, as those of your former associate, and act in accordance with the convictions of duty?