The Stadtholder's library was accidentally shut, owing to the illness of the librarian. The picture gallery was open, but of paintings we have resolved to exempt our readers from any mention. The former is said to contain eight thousand volumes, and fourteen thousand prints in portfolios. Among the illuminated MSS. in vellum is one, used by the sanguinary Catherine De Medicis and her children; and another, which belonged to Isabella of Castille, the grandmother of Charles the Fifth. What must be oddly placed in a library is a suit of armour of Francis the First, which was once in the cabinet of Christina of Sweden. Though this collection is the private property of the Prince, the librarian is permitted to lend books to persons, known to him and likely to use them advantageously for science. We passed a long morning in walking through the streets of this place, which contain probably more magnificent houses than can be found in the same space in any city of Northern Europe. The Grand _Voorbout_ is rather, indeed, two series of palaces than a street. Between two broad carriage-ways, which pass immediately along the sides, are several alleys of tall lime trees, canopying walks, first laid out by Charles the Fifth, in 1536, and ordered to be carefully preserved, the _placard_ being still extant, which directs the punishment of offenders against them. It would be tedious to mention the many splendid buildings in this and the neighbouring streets. Among the most conspicuous is the present residence of the British Ambassadors, built by HUGUETAN, the celebrated banker of LOUIS the FOURTEENTH, and that of the Russian Minister, which was erected by the Pensionary BARNEVELDT. But the building, which was intended to exceed all others at the Hague, is the Hotel of the Prince of NASSAU WEILBOURG; who, having married the sister of the PRINCE of ORANGE, bought, at an immense expence, eight good houses, facing the _Voorbout_, in order to erect upon their scite a magnificent palace. What has been already built of this is extremely fine, in the crescent form; but a German, arriving to the expenditure of a Dutch fortune, probably did not estimate it by Dutch prices. It was begun eighteen years since, and, for the last twelve, has not proceeded.