The principal attraction of the palace is the Green Vaults, a series of eight apartments, taking their name from the former color of the furnishings, in which are kept the treasures of the kingdom, and an immense variety of curious, rare, and costly articles. Only six persons can be admitted at one time, and the fee for this or any less number is two thalers, or a dollar and a half. An arrangement was made by which the entire party could see them in the course of the day. A portion of the students went to the picture gallery first, another to the Green Vaults, and a third to the Armory in the Zwinger, so as to avoid uncomfortable crowds. One room in the Green Vaults is said to contain jewels to the value of fifteen million dollars, which is only a portion of the riches of the palace. The Saxon princes were formerly the wealthiest monarchs in Europe, the silver mine of Freiberg yielding them an immense revenue. They used much of their riches in accumulating valuable and costly works of art, jewels, trinkets, and curiosities. The first room contains articles in bronze; the second, carvings in ivory, of the most elaborate description; the third, Florentine mosaics; the fourth, gold and silver plate, used at the banquets of the kings; the fifth, vessels and articles cut from various minerals; the sixth, figures in ivory and wood, and jewels and trinkets; the seventh, the regalia worn by Augustus II., who was elected King of Poland, at his coronation. The eighth contains a collection of jewels and other costly articles, calculated to astonish and bewilder a simple republican--rubies, diamonds, sapphires, and emeralds, chains, collars, crosses, rings, swords. The court of the Great Mogul is composed of one hundred and thirty-two figures, of pure gold enamelled, which cost nearly fifty thousand dollars. The Armory contains one of the finest collections of armor and historical relics in Europe. In one room is a cabinet given by the Elector of Saxony to Martin Luther, which contains several articles that belonged to the reformer. In another are the coronation robes of Augustus the Strong, the horseshoe he broke with his fingers, and his iron cap, weighing nineteen pounds. The saddle of Napoleon, the boots he wore at Dresden, and the shoes he wore at his coronation, are to be seen. One room contains a tent taken from the Turks at the siege of Vienna, with various memorials of John Sobieski, who saved the city. The rooms were all full of interest, but the students were obliged to hasten through them.