In the evening the Count made his appearance, and found the wine, according to his instructions, set out with some care by Marianna and Giardini. Gambara proudly exhibited the little drums, on which lay the powder by means of which he made his observations on the pitch and quality of the sounds emitted by his instruments. "You see," said he, "by what simple means I can prove the most important propositions. Acoustics thus can show me the analogous effects of sound on every object of its impact. All harmonies start from a common centre and preserve the closest relations among themselves; or rather, harmony, like light, is decomposable by our art as a ray is by a prism." He then displayed the instruments constructed in accordance with his laws, explaining the changes he had introduced into their constitution. And finally he announced that to conclude this preliminary inspection, which could only satisfy a superficial curiosity, he would perform on an instrument that contained all the elements of a complete orchestra, and which he called a _Panharmonicon_. "If it is the machine in that huge case, which brings down on us the complaints of the neighborhood whenever you work at it, you will not play on it long," said Giardini. "The police will interfere. Remember that!" "If that poor idiot stays in the room," said Gambara in a whisper to the Count, "I cannot possibly play." Andrea dismissed the cook, promising a handsome reward if he would keep watch outside and hinder the neighbors or the police from interfering. Giardini, who had not stinted himself while helping Gambara to wine, was quite willing. Gambara, without being drunk, was in the condition when every power of the brain is over-wrought; when the walls of the room are transparent; when the garret has no roof, and the soul soars in the empyrean of spirits. Marianna, with some little difficulty, removed the covers from an instrument as large as a grand piano, but with an upper case added. This strange-looking instrument, besides this second body and its keyboard, supported the openings or bells of various wind instruments and the closed funnels of a few organ pipes. "Will you play me the prayer you say is so fine at the end of your opera?" said the Count. To the great surprise of both Marianna and the Count, Gambara began with a succession of chords that proclaimed him a master; and their