It is now pretty well known that the site chosen lor the re-erection of the Crystal Palace is an irregular parallelogram of about 800 acres, extending from the Brighton Railway, where it has a frontage of 1300 feet (between the Sydenham and Anerley station), to the road which borders the top of Dulwich-wood, where it has a frontage of 3000 feet The fall from this point to the railway in question is stated to be about 200 feet It was at once felt that the most eligible position for the new building was on the summit of this hill, and immediately adjoining the road. The building placed in so commanding a situation will be visible from London on the one side, and from a vast extent of country on the other. The only little inconvenience attending its erection on a hill is the want of water to supply the various fountains with which the termce garden and park are to be decorated This, however, is to be overcome by boring for it at the bottom of the park, near the railway, and raising it in pipes underground by steam power to a large reservoir at the north end of the building, to the top of a tower, on which it will again be pumped up, so as to give sufficient fall for the gigantic purposes to which it will be afterwards applied.

Notwithstanding the wetness of the weather, the heavy operations connected with the formation of the terrace garden and the ground work in the park are now in rapid progress. About 1000 laborers have been employed for the last three weeks in levelling the ground, and forming basins for the various fountains, etc. As yet, however, nothing has assumed its proper form; and therefore, to an ordinary observer, all is in the meantime apparently confusion. We understand, however, that everything will be on a grand scale, so as to correspond with the noble building itself. We learned from Mr. Milner, to whom the carrying out of the work has been entrusted, that on the park side of the palace, and running parallel with it during its whole length, will be a raised terrace walk 48 feet broad, which will be approached from the basement floor of the building immediately under the center transept (for it is to have three) by a flight of granite step3 120 feet wide. This walk will be furnished on the side farthest from the palace with balustrades and bastions, which will overlook a grass slope 50 feet wide; and then a terrace garden ornamented with flower beds on grass, fountains, shrubs, and trees, and intersected in various directions by broad gravel walks.

This garden will be S00 feet in breadth, closed in at the ends by the two projecting wings of the palace, and cut off from the park by an ornamental terrace wall, also furnished with bastions and balustrades. The two projecting wings of the building will terminate in two towers, each 96 feet in height, from which, as well as from the various bastions, a fine view of the terrace gardens, the park, and the wide spreading valley beyond, will be obtained. The most extensive view of the surrounding country, however, which is on all sides highly picturesque, will be had from the building itself, along whose whole length we learn there is to be an open colonnade. A walk 96 feet broad will lead, by a flight of steps of the same width, from the center of the terrace garden to a fountain and circular basin, 192 feet in diameter, at a little distance in the park; and after passing round this basin, will proceed in the direction of Penge Church, till it terminates in another circular basin and series of magnificent fountains, whose equals will only be found in such great gardens as that of Chatsworth itself.

To give some idea of the magnificence of the display that may be expected to be found here, we may mention that the center column of water will raise 230 feet in height; around that will be four fountains, each 120 feet in height, and these again will be surrounded by 16 others, each 72 feet in height, Nor is this all; there are other groups as grand, besides multitudes of smaller decorations of a similar character, which in themselves will doubtless be worthy of Sir Joseph Paxton's skill and experience in the construction of such matters. On the south-east side of the great fountain just described, will be a lake covering 5 acres of ground; other ornamental water will chiefly consist of two stripes on either side of the principal walk, just below the first fountain. These are to be each 450 feet in length, and will be fashioned into cascades, which will fall into broader pieces of water on the right and left of the walk, and lying at right angles to it, each 1000 feet long. These two latter pieces will each contain fountains of great power and beauty, so that there will certainly be no want of decorations of this kind, which tend so much to set off pleasure-grounds to advantage.

On two little knolls on either side of the principal walk, but at some distance from it, will be a flower garden with an arbor or some erection of that kind in the center, and all round these, as well as in the neighborhood of the fountains, and indeed all in front of the terrace garden down to the south-east extremity of the ornamental water, will be dress grounds, interwoven with walks, margined with flower beds and shrubs, of which it will be seen an immense quantity will be required both for this portion of the park and for the terrace garden. Report says that 50,000 scarlet Pelargoniums have been contracted for. Sir Joseph Paxton, however, we believe possesses classified lists of what plants of the kinds wanted, English nurseries are capable of supplying; but with respect to purchases, little definitely has been done, with the exception of the buying Messrs. Loddiges collection mentioned at page 616. It will thus be seen that the gardening operations connected with this great undertaking are as yet comparatively in their infancy, and the directors will have much to do before all that we have mentioned above shall have been completed.

Beyond the dress ground will be the open park, the Anerly side of which, where there is a considerable extent of wood and thicket, will be converted into a kind of gipsy ground, by forming walks through the wood; but not otherwise materially altering its natural character. This will afford an agreeable and cool retreat from the scorching heat of a summer's sun. By way of conclusion, we may mention that a new branch railway from Sydenham will set the visitor down on the south-east side of the park, at the end of a glass-covered walk, 48 feet broad, which will connect the station with the palace. - London Garedneri Chronicle.