At another time he devoted himself entirely to music, and in a long latticed room, with a vermilion-and-gold ceiling and walls of olive-green lacquer, he used to give curious concerts in which mad gipsies tore wild music from little zithers, or grave, yellow-shawled Tunisians plucked at the strained strings of monstrous lutes, while grinning Negroes beat monotonously upon copper drums and, crouching upon scarlet mats, slim turbaned Indians blew through long pipes of reed or brass and charmed--or feigned to charm--great hooded snakes and horrible horned adders. The harsh intervals and shrill discords of barbaric music stirred him at times when Schubert's grace, and Chopin's beautiful sorrows, and the mighty harmonies of Beethoven himself, fell unheeded on his ear. He collected together from all parts of the world the strangest instruments that could be found, either in the tombs of dead nations or among the few savage tribes that have survived contact with Western civilizations, and loved to touch and try them. He had the mysterious _juruparis_ of the Rio Negro Indians, that women are not allowed to look at and that even youths may not see till they have been subjected to fasting and scourging, and the earthen jars of the Peruvians that have the shrill cries of birds, and flutes of human bones such as Alfonso de Ovalle heard in Chile, and the sonorous green jaspers that are found near Cuzco and give forth a note of singular sweetness. He had painted gourds filled with pebbles that rattled when they were shaken; the long _clarin_ of the Mexicans, into which the performer does not blow, but through which he inhales the air; the harsh _ture_ of the Amazon tribes, that is sounded by the sentinels who sit all day long in high trees, and can be heard, it is said, at a distance of three leagues; the _teponaztli_, that has two vibrating tongues of wood and is beaten with sticks that are smeared with an elastic gum obtained from the milky juice of plants; the _yotl_-bells of the Aztecs, that are hung in clusters like grapes; and a huge cylindrical drum, covered with the skins of great serpents, like the one that Bernal Diaz saw when he went with Cortes into the Mexican temple, and of whose doleful sound he has left us so vivid a description. The fantastic character of these instruments fascinated him, and he felt a curious delight in the thought that art, like Nature, has her monsters, things of bestial shape and with hideous voices. Yet, after some time, he wearied of them, and would sit in his box at the opera, either alone or with Lord Henry, listening in rapt pleasure to "Tannhauser" and seeing in the prelude to that great work of art a presentation of the tragedy of his own soul.

On one occasion he took up the study of jewels, and appeared at a costume ball as Anne de Joyeuse, Admiral of France, in a dress covered with five hundred and sixty pearls. This taste enthralled him for years, and, indeed, may be said never to have left him. He would often spend a whole day settling and resettling in their cases the various stones that he had collected, such as the olive-green chrysoberyl that turns red by lamplight, the cymophane with its wirelike line of silver, the pistachio-coloured peridot, rose-pink and wine-yellow topazes, carbuncles of fiery scarlet with tremulous, four-rayed stars, flame-red cinnamon-stones, orange and violet spinels, and amethysts with their alternate layers of ruby and sapphire. He loved the red gold of the sunstone, and the moonstone's pearly whiteness, and the broken rainbow of the milky opal. He procured from Amsterdam three emeralds of extraordinary size and richness of colour, and had a turquoise _de la vieille roche_ that was the envy of all the connoisseurs.

He discovered wonderful stories, also, about jewels. In Alphonso's Clericalis Disciplina a serpent was mentioned with eyes of real jacinth, and in the romantic history of Alexander, the Conqueror of Emathia was said to have found in the vale of Jordan snakes "with collars of real emeralds growing on their backs." There was a gem in the brain of the dragon, Philostratus told us, and "by the exhibition of golden letters and a scarlet robe" the monster could be thrown into a magical sleep and slain. According to the great alchemist, Pierre de Boniface, the diamond rendered a man invisible, and the agate of India made him eloquent. The cornelian appeased anger, and the hyacinth provoked sleep, and the amethyst drove away the fumes of wine. The garnet cast out demons, and the hydropicus deprived the moon of her colour. The selenite waxed and waned with the moon, and the meloceus, that discovers thieves, could be affected only by the blood of kids. Leonardus Camillus had seen a white stone taken from the brain of a newly killed toad, that was a certain antidote against poison. The bezoar, that was found in the heart of the Arabian deer, was a charm that could cure the plague. In the nests of Arabian birds was the aspilates, that, according to Democritus, kept the wearer from any danger by fire.