We should now descend the staircase to the left, and, crossing over to the eastern end of the Great Transept, we can reach the basement story of the building, which is on a level with the first Terrace. The Basement has been divided into two departments: that to the north is allotted to the exhibition of Agricultural Implements, &c.; in that to the south is arranged the important exhibition of Machinery in Motion. THE AGRICULTURAL IMPLEMENT DEPARTMENT. The application of science to farming, and the great necessity that there is at the present day of availing ourselves of every mechanical improvement for the sake of economy, and for the better carrying out of the various agricultural operations, render the use of improved machinery an absolute necessity. And when we compare the flail of a few years ago with our present threshing-machines, and note how mechanical power has, in a very few years, almost entirely taken the place of hand-labour in this, as in every other art, we shall see that the improvement in agricultural machinery has been making most rapid strides, and that the manufacture of agricultural implements has grown to a most important industry. The collection of these implements at the Crystal Palace supplies a desideratum that has been felt and acknowledged both by the public and by the manufacturers themselves--an emporium where the various machines of every maker may be brought together, so as to be seen at one glance and their respective merits examined; thus facilitating the selection by purchasers, and in some measure preventing the possibility of inferior implements being sent out. This has been partially effected by the exhibitions of the Smithfield Club, and by the periodical gathering of the Royal Agricultural Society; but it is only with the present attempt that the same thing on a permanent footing has been offered to the public. In the Crystal Palace are now exhibited and _sold_ the principal machines made by nearly all the first manufacturers; indeed, each firm has sent those machines for which it is chiefly noted, so that everything exhibited in this department must be of the very best; such, in short, as the manufacturers are most proud of. All the machines, &c., are sold by the Superintendent on the spot, at the same prices as at the makers. These machines comprise a large collection of prize, portable, and fixed steam-engines; a large assortment of drill machines, both for drilling seed and manure; several reaping machines are also exhibited.