A gentleman who was traveling in Italy some years ago, was very anxious to see the dance, but it being too early in the year for the spider to be found, all he could do was to prevail on a young woman who had been bitten on a previous year to go through the dance for him just as she did then. She agreed to the proposal, and at first lolled listlessly and stupidly about, while slow, dull music was played. At length the right chord was touched; she sprang up with a fearful yell, and staggered exactly like a drunken person, holding a handkerchief in each hand, and moving correctly to tune. As the music became more lively, she jumped about with great velocity, shrieking very loudly. Altogether, the scene was most painful, but was acted to perfection. The patients were always dressed in white, and adorned with red, green, and blue ribbons; their hair fell loosely over their shoulders, which were covered with a white scarf. All that we have related as to the effects of the bite, was long believed to be true; but many years ago its truth was questioned, and the result of the investigation was, that the tarantula was a harmless insect, and that the supposed injuries inflicted by it were made use of as an excuse for indulging in a dance similar to that of the priestess of Bacchus, which the introduction of Christianity had put an end to. Those who are not impostors are merely afflicted with a nervous illness, known by the name of St. Vitus's Dance: and to this saint many chapels have been dedicated. Another curious and interesting description of the spider is that called the water-diving spider. It can easily be understood that a spider would not find any difficulty in breathing under water, inasmuch as they are provided with gills. But the diving-spider is not content, as frogs are, with the air furnished by the water, but independently carries down a supply with her to her sub-marine territories. This spider, which is constantly found in the neighborhood of London, does not relish stagnant water, preferring slow-running streams, where she lives in her diving-bell, which shines like a globe of silver. This shining appearance is supposed to proceed either from an inflated globule surrounding the abdomen, or else from the space between the body and the water. When the little diver wishes to inhale a fresh supply of atmospheric air, it rises to the surface, with its body still continuing in the water, and merely the part containing the spinneret visible, and this it briskly opens and moves. It generally comes up every quarter of an hour, although it _could_ remain in the water for many days together. A thick coating of hair prevents its being wet, or otherwise incommoded by the water.