4. Five Plates will constitute a Number; one Plate from one of the largest Drawings, one from one of the second size, and three from the smaller Drawings. 5. There are 400 Drawings; and it is proposed that they shall comprise Three Volumes, each containing about 133 Plates, to which an Index will be given at the end of each, to be bound up with the Volume. 6. Five Numbers will come out annually. 7. The Price of each Number will be Two Guineas; payable on delivery. TEN Numbers being now completed, will give an exact idea of the nature and style of the Work. All the other Numbers will at least equal these in interest and execution. It would be advisable for the Subscribers to procure a Portfolio, to keep the Numbers till a Volume is completed. ⁂Persons desirous of becoming Subscribers are requested to apply to Mr. Audubon, or Mr. Robert Havell, Jun. (Engraver), 79, Newman Street, Oxford Street, London. Where Specimens of the Work may be seen: or, to any of the following Agents:—Messrs. Treuttel, Würz & Co., Soho Square, and Mr. S. Highly, Fleet Street, London; MM. Levrault and Pitois, Paris; Messrs. Robinsons, Liverpool; Mr. T. Sowler, Manchester; Mr. M. A. Barclay, York; Messrs. Hernaman and Robinson, Leeds; Mr. E. Charnley, Newcastle-upon-Tyne; and J. B. Kidd, Esq., Edinburgh. NOTE BY THE AUTHOR. Audubon's first Prospectus was issued on March 17, 1827, when two Numbers of his large work were ready, and the last which I have seen bears the date of 1831, when one hundred plates had been published. The present citation is from a copy in possession of the Boston Public Library; it is printed on two sides of white paper, octavo, and bears the autograph of "Wm. Everett, Esq., Aug. 7, 1867." 3. Prospectus of the Second (partial) Edition of "The Birds of America," issued by John Woodhouse Audubon, through Messrs. Trübner & Company, London, 1859. (See Bibliography, Nos. 9 and 10.) AUDUBON'S Celebrated Work BIRDS OF NORTH AMERICA To be published in Numbers, by Subscription only, at one half the original price. The undersigned proposes to publish, by Subscription, this well-known Work of his late Father, J. J. Audubon, F.R.SS.L.&E., etc., from the original Copperplates transferred to stone. This Edition, in softness, finish, and correctness of coloring, will be superior to the first, and every Plate will be colored from the original Drawings, still in possession of the family. It will contain all the Plates and Text of the original Work, embracing more than one thousand figures of Birds, all of the size of nature, represented in action amid the scenes or on the plants most common to their habits,—together with seven volumes royal octavo, of Ornithological Biography.