The "Second Pyramid," which stands to the north-east of the Third, at the distance of about two hundred and seventy yards, was a square of seven hundred and seven feet each way, and thus covered an area of almost eleven acres and a half, or nearly double that of the greatest building which Rome ever produced--the Coliseum. The sides rose at an angle of 52° 10'; and the perpendicular height was four hundred and fifty-four feet, or fifty feet more than that of the spire of Salisbury Cathedral. The cubic contents are estimated at 71,670,000 feet; and their weight is calculated at 5,309,000 tons. Numbers of this vast amount convey but little idea of the reality to an ordinary reader, and require to be made intelligible by comparisons. Suppose, then, a solidly built stone house, with walls a foot thick, twenty feet of frontage, and thirty feet of depth from front to back; let the walls be twenty-four feet high and have a foundation of six feet; throw in party-walls to one-third the extent of the main walls--and the result will be a building containing four thousand cubic feet of masonry. Let there be a town of eighteen thousand such houses, suited to be the abode of a hundred thousand inhabitants--then pull these houses to pieces, and pile them up into a heap to a height exceeding that of the spire of the Cathedral of Vienna, and you will have a rough representation of the "Second Pyramid of Ghizeh." Or lay down the contents of the structure in a line a foot in breadth and depth--the line would be above 13,500 miles long, and would reach more than half-way round the earth at the equator. Again, suppose that a single man can quarry a ton of stone in a week, then it would have required above twenty thousand to be employed constantly for five years in order to obtain the material for the pyramid; and if the blocks were required to be large, the number employed and the time occupied would have had to be greater.