There is also a stone or rather marble, staircase which leads up from the platform to the summit of the first story, composed of small polished blocks, twenty-two inches long, thirteen broad, and four and a half thick.

The bed of the staircase is made of sun dried brick, and the marble was fastened to this substratum by copper bolts, some portion of which was found by Mr.Taylor still adhering to the blocks.

At the foot of the staircase there appear to have stood two columns, one on either side of it.

The construction of these columns is very singular.

A circular nucleus composed of sandstone slabs and small cylindrical pieces of marble disposed in alternate layers, was coated externally with coarse lime, mixed with small stones and pebbles, until by means of many successive layers the pillar had attained the desired bulk and thickness.