In that portion of the Erectheum which was dedicated to Minerva Polias, the columns of the front porch are standing, but without any part of their entablature. The marble[62] of this ruin is of virgin whiteness; and the workmanship, as the structure is very diminutive in comparison with the specimens of the Parthenon, is a still more exquisite example than that temple, of the polish and edge which were given to all the parts of Grecian architecture. The line of no pencil can excel the delicate accuracy of contour in the swell of the torus, and the ornaments of the base; and the hand, in passing repeatedly over the marble, seeks in vain for the slightest inequality or even roughness on the surface. A bluish-grey limestone[63] seems to have been used in some of the works; particularly in the exquisite ornaments of the Erectheum, where the frieze of the temple and of its porticoes are not of marble like the rest of the building, but of this sort of slate-limestone. This resembles the limestone employed in the walls of the cella at the temple of Ceres, at Eleusis, and in buildings before the use of marble was known for purposes of architecture: such, for example, is the sort of stone employed in the temple of Apollo at Phigalia, and in other edifices of equal antiquity; it effervesces briskly in acids, and has all the properties of common compact lime, except that it is hard enough to cut glass, and, of course, is susceptible of a fine polish, exhibiting a flat conchoidal fracture, which is somewhat splintery. We could not discover a single fragment of porphyry; which was remarkable, as this substance was almost always used by the ancients in works of great magnificence. The temple of ANCHESMIAN JUPITER stood upon a commanding eminence. The pagan shrine has been succeeded by a small Christian sanctuary. Of the scene from the top of this steep and craggy rock, Wheler speaks in a style of enthusiasm, rather unfrequent with him:--"I wish I could make you taste the same satisfaction, while I describe the prospect, that I then did, and still do, when I consider it. Here, either a Democritus might sit and laugh at the pomps and vanities of the world, whose glories so soon vanish; or a Heraclitus weep over the manifold misfortunes of it, telling sad stories of the various changes and events of life. This would have been a place to inspire a poet, as the brave actions, performed within his view, have already exercised the pens of great historians. Here, like Virgil, he might have sate, and interwoven beautiful descriptions of the rivers, mountains, woods of olives, and groves of lemons and oranges, with the celebrated harbours on the shores and islands, all lying before him, as on a map, which I was content to do only in contemplation; and with a sea-compass to mark out the most considerable places on paper."