Casimir Pétiaux, Paris. H. S. Ridley, Architect, 31, Vincent-square, Westminster. J. B. Roberts, Architect, Sleaford, Lincolnshire. A. Rosengarten, Architect, Hamburg. H. Rouse, Esq. W. Russell, 3, Frederick-street, Hampstead-road. H. Savage, 22, Beaumont-street, Marylebone. J. P. Seddon, Esq., Gray's-inn-road. A. Slater, Architect, Elève de Mons. Cluysenaar. F. Smallman Smith, 18, Brunswick-street, Barnsbury-road, Islington. C. H. Smith, Clipstone-street, London. Paul Sprenger, Architect, Vienna. H. Sumners, Architect, 14, College-place, Camden Town. Richard and Thomas Turner, Hammersmith Works, Dublin. F. Tyerman, Jun., Architect, 14, Parliament-street. Mons. Véron, 2, Quai des Ormes, Paris. J. Watson, 74, Grey-street, Newcastle-upon-Tyne. W. H. Wontner, Architect, St. Ann's-road, North Brixton. T. Worthington, Architect, King-street, Manchester. ---- LIST B. ENTITLED TO FURTHER HIGHER HONORARY DISTINCTION. C. Badger, Architect, Rue Blanche, Paris. Thomas Bellamy, Architect, Charlotte-street, Bedford-square. J. H. Bertram, C. E., Reading. A. Botrel, Architect, 121, Rue Poissonnière, Paris. J. Cailloux, Architect, 25, Marché St. Honoré, Paris. Henri Van Cléemputte, Architect, Laon, France. Mons. Crémont, Architect, 10, Place des Vosges, Paris. A. Delaage, Architect, 6, Place de l'Oratoire du Louvre, Paris. M. G. Fétar Van Elven, Architect, Amsterdam. J. Henard, Architect, 98, Rue St. Lazarre, Paris. H. Horeau, 70, Rue Richelieu, Paris. C. Huchon, 28, Rue Meslay, Paris. A. G. Ledrut, Clermont, France. H. le Pâtre, Architect, 4K, Grande Rue de la Chapelle, St. Denis, Paris. Casimir Pétiaux, Paris. Paul Sprenger, Architect, Vienna. Richard and Thomas Turner, Hammersmith Works, Dublin. Mons. Véron, 2, Quai des Ormes, Paris. [Illustration: Mons. Hector Horeau's Design for the Building. Exterior] [Illustration: View of the Interior.] TWO OF THE COMPETITION DESIGNS. ---- The following descriptions and plates of two of the designs sent in competition for the Building, and specially mentioned by the Committee in their Report, are given from information obligingly furnished to us by their respective authors. DESIGN BY M. HECTOR HOREAU, ARCHITECT, OF PARIS. This was one of the most striking of all that were submitted to the Commission; it formed one immense hall, or shed, more than 2000 feet long, by about 270 feet wide throughout, with several small detached buildings on the north side, for refreshments, &c.