What has been called, and perhaps justly so, the oldest religious monument in the world was discovered a few years ago by Mariette Bey, near the Great Pyramid. For ages it had lain there, buried in the sand--how many we cannot tell, but very many we know; enough to carry us back to a very remote past. And this, too, like the Indian temples, was in the shape of a cross. Renan visited it in 1865, and though he found it in many particulars different from those known elsewhere, he described the interior, which much recalled the chamber of the Great Pyramid, as in the form of =T=, the principle aisle being divided in three rows, the transverse aisle in two. Mr. Fergusson, the architect, also saw it, and, while admiring its simple and chaste grandeur of style, with some astonishment described the form of the principal chamber as that of a CROSS. And this was the plan of both tomb and temple in the earliest ages, testifying to the great veneration paid to this symbol. There is a remarkable resemblance between the Buddhist crosses of India and those used by the Christian Roman Church. The cross of the Buddhist is represented with leaves and flowers springing from it, and placed upon a Calvary as by the Roman Catholics. It is represented in various ways, but the shaft with the cross-bar and the Calvary remain the same. The tree of life and knowledge, or the jamba tree, in their maps of the world, is always represented in the shape of a cross, eighty-four yoganas, or 423 or 432 miles high, including the three steps of the Calvary. From India we naturally turn to China, and, though its use there is involved in a deal of mystery, the cross is found among their hieroglyphics, on the walls of their pagodas and on the lamps which they used to illuminate their temples. In Kamschatka, Baron Humboldt found the cross and remains of hieroglyphics similar to those of Egypt. Passing into America, we find that what could only be described as perfect idolatry prevailed with respect to the veneration paid to the cross. Throughout Mexico and some parts of South America the emblem is constantly found, and in many instances is evidently of great antiquity. Some travellers have explained their presence by attributing them to the Spaniards, but those people found them there when they arrived, and were greatly astonished at the spectacle, not knowing how to account for it. A lieutenant of Cortez passed over from the island of Cosumel to the continent, and coasted the peninsula of Yucatan as far as Campeachy. Everywhere he was struck with the evidences of a higher civilisation, and was astonished at the sight of numerous large stone crosses, evidently objects of worship, which he met with in various places.