By degrees she had visited every apartment in this enchanted palace: but one willingly returns to the inspection of things which are rare, singular, and costly. Beauty turned her steps towards a great saloon, which she had only seen once before. This room had four windows in it on each side. Two only were open, and admitted a glimmering light. Beauty wished for more light, but in lieu of obtaining any by opening another window, she found it only looked into some enclosed space, which, although large, was obscure, and her eyes could distinguish nothing but a distant gleam, which appeared to reach them through the medium of a very thick crape. Whilst pondering for what purpose this place could have been designed, she was suddenly dazzled by a brilliant illumination. The curtain rose and discovered to Beauty a theatre, exceedingly well lighted. On the benches and in the boxes she beheld all that was most handsome and well made of either sex.[18] A sweet symphony, which instantly commenced, terminated only to permit other actors than monkey and parrot performers to represent a very fine tragedy, which was followed by a little piece, quite equal in its own style to that which had preceded it. Beauty was fond of plays. It was the only pleasure she had regretted when she left the city. Desiring to ascertain what sort of material the hangings of the box next to her were made of, she found herself prevented doing so by a glass which separated them, and thereby discovered that what she had seen were not the actual objects, but a reflection of them by means of this crystal mirror, which thus conveyed to her sight all that was passing on the stage of the finest city in the world. It is a master-stroke in optics to be able to reflect from such a distance. She remained in her box some time after the play was over, in order to see the fine company go out. The darkness that gradually ensued compelled her to think of other matters. Satisfied with this discovery, of which she promised to avail herself often, she descended into the gardens. Prodigies were becoming familiar to her. She rejoiced to find they were all performed for her advantage and amusement.