THE MIRROR OF LITERATURE, AMUSEMENT, AND INSTRUCTION. * * * * * VOL. XIII, NO. 356.] SATURDAY, FEBRUARY 14, 1829. [PRICE 2d. * * * * * Interior of the Colosseum. [Illustration: Interior of the Colosseum.] _References to the Engraving._ A. Column or Tower in the centre of the building, for supporting the Ascending Room, &c. B. Entrance to the Ascending-Room. C. Saloon for the reception of works of art. D. Passage lending to the Saloon, Galleries, and Ascending-Room. E. F. Two separate Spiral Flights of Steps, leading to the Galleries, &c. G. H. I. Galleries from which the Picture is to be viewed. K. Refreshment-Room. L. Rooms for Music or Bells. M. The Old Ball from St. Paul's Cathedral. N. Stairs leading to the outside of the Building. _a. b._ Sky-lights. _c._ Plaster Dome, on which the sky is painted, _d._ Canvass on which the part of the picture up to the horizon is painted. _e._ Gallery, suspended by ropes, used for painting the distance, and uniting the plaster and the canvas. _f._ Temporary Bridge from the Gallery G to the Gallery _e._ from the end of which the echo of the building might be heard to the greatest advantage. _g._ One of Fifteen Triangular Platforms, used for painting the sky. _h._ Platforms fixed on the ropes of the Gallery _e_, used for finishing and clouding the sky. _k._ Different methods for getting at the lower parts of the canvas. _l._ Baskets for conveying colours. &c. to the artists, _m._ Cross or Shears, formed of two poles, from which a cradle or box is suspended, for finishing the picture after the removal of all the scaffolding and ropes. Mr. Hornor, in his colossal undertaking, has "devised a mean" to draw us out of the way; and a successful one it has already proved. As a return for the interest which his enterprise has excited, we are, however, induced to present its details to our readers, as perfect as the limits of the MIRROR will allow; and for this purpose we have been favoured by Mr. Parris with the drawing for the annexed cut.