It has been said by some, that my work on the Birds of America would not terminate until I had added to those of the United States, the numerous species of the southern portion of our continent. Allow me, reader, to refer you in refutation of this assertion to my prospectus, in which it is stated that my work will be completed in four volumes. In whatever other enterprise I may engage, rely upon it I will adhere to my original design in this; and the only change will be, that the period of publication will be shortened, and that there will be added landscapes and views, which were not promised in the prospectus.
From my original intention of publishing _all_ the Land Birds first, I have been induced to deviate, in consequence of letters from my patrons, requesting that, after the conclusion of the second volume, the Water Birds should immediately appear. Indeed the various opinions which my subscribers occasionally express, are not a little perplexing to the "American Woodsman," ever desirous to please all, and to adhere to the method proposed at the commencement of the work. In the fourth and last volume, after the Water Birds, will be represented all that remain unpublished, or that may in the mean time be discovered, of the Land Birds. As I cannot, in the fourth volume, proportion the plates in the same manner as in the other three, the number of large drawings will be much greater in it: but the _numbers_ will still consist of five plates, and I trust my patrons will find the same careful delineation as before, with more perfect engraving and colouring. These last numbers will of course be much more expensive to me than those in which three of the plates were small. The fourth volume will conclude with representations of the eggs of the different species.
You have perhaps observed, or if not, I may be allowed to tell you, that in the first volume of my Illustrations, in which there are 100 plates, 240 figures of birds are given; and that in the second, consisting of the same number of plates, there are 244 figures. The number of species not described by WILSON, are, in the first volume twenty-one, and in the second twenty-four.
Having had but one object in view since I became acquainted with my zealous ornithological friend, the Prince of Musignano, I have spared no time, no labour, no expense, in endeavouring to render my work as perfect as it was possible for me and my family to make it. We have all laboured at it, and every other occupation has been laid aside, that we might present in the best form the Birds of America, to the generous individuals who have placed their names on my subscription list. I shall rejoice if I have in any degree advanced the knowledge of so delightful a study as that which has occupied the greater part of my life.