The earth-stones are thirty-four in number, eleven on each side and six on each end of the building. They are set on the pedestal course, or first granite course, extending twenty-eight inches above ground. There is one of these stones in each buttress, excepting only the buttresses at the junction of the towers with the main body. These earth-stones constitute the largest cuboidal blocks in the building; each of them measures five feet six inches in height, four feet six inches in width, and one foot eight inches in thickness, and weighs little less than three and one-half tons. Each of these massive blocks is cut to show part of the surface of a sphere, the segment having a diameter of over three feet. Blocks cut to represent the moon in its several phases, and known as moon-stones, occupy conspicuous places in the buttresses immediately below the second string-course or water-table; they are therefore on a level with the top of the first or lower line of oval windows corresponding to the ceiling of the Mezzanine story. There are fifty such moon-stones; each four feet seven inches high, three feet six inches wide, and one foot thick. Sun-stones are set in the buttresses directly under the third belt-course or water-table, which is practically the level of the roof. There are fifty of these, each cut to represent the body of the sun, with a serrated edge of fifty-two points illustrative of the sun's rays. These {178} stones are each four feet seven inches high, three feet six inches wide, and ten inches thick. Star-stones are numerous; each bears in relief the figure of a five-pointed star. On the east center-tower immediately below the battlements are sixteen of these, four of each face; and on each of the east corner-towers are twelve such stones, making forty on these towers alone. The keystones of the doorways and those of the window arches belong to this class, each bearing a single star. Star-stones of another kind appear on the face of the center tower at the west. Here, above the highest window and extending to the base of the battlement course, are seen the seven stars of the northern constellation Ursa Major or Great Bear, otherwise known as the Dipper. The group is so placed that the two stars called pointers are practically in line with the North Star itself. Cloud-stones, two in number, are seen on the upper face of the east center tower, immediately under the cap-pings of the main buttresses. These show a cluster of cumulus clouds through which the sun's rays are breaking. The face so carved is five feet by three and a half feet in area.