The Catacomb and Memorial Hall are each lighted by six openings, and each opening is designed to be closed by a single piece of plate glass, when necessary.

The central shaft, being seventeen feet square at the bottom, as it rises is reduced to twelve feet square on the cutside, at the top of the Terrace, and tapers to eight feet square at the apex, ninety-eight feet four and a half inches from the ground. The outside is dressed granite, and the inside hard burned brick. The shaft, or obelisk, is hollc w from the terrace to the top, eightytwo and a half feet. The opening is six feet in diameter, and perfectly round. Fastenings were built in the wall, as the work progressed, for the support of a circular iron stairway, which ascends from the entrance, over the Terrace, as shown in Figure 5, and ends in a platform of iron, just near enough the cap stone to leave convenient room for standing erect. Each step is fastened to the wall by two iron bolts, the other end is attached to a central iron shaft, which extends from bottom to top. Figure 7 presents an interior view of the construction of the stairway.

One-third of the way from the Terrace to the top, there is a circular window, one foot in diameter, on each of the four sides. Two-thirds of the way up, there are four similar windows. At the top, and at a convenient height to stand on the platform and look out, there are twelve of these windows, three on each side. Each one was intended to have been closed by a single piece of plate glass, three-fourths of an inch thick, but it has been found necessary thus far to leave them open, to afford ventilation as well as light.

The study of Figure 7 will enable the reader to understand the interior construction of the monument better than a written description only.

It is as though the monument was cut exactly through the centre, from north to south, and you were standing at the west, facing the east, and looking at the eastern half. You see how the arches are sprung from one wall to another, to support the stone flagging which forms the Terrace. The south end, or that to the right, shows the interior of Memorial Hall, and the north end, or that to the left, shows the interior of the Catacomb, without any attempt to illustrate the crypts. The letter S indicates that the material used is stone, and the letter B, brick. It will be observed that the foundation of the obelisk is sunk much deeper than the other walls. The spiral stairway is seen commencing on a level with the Terrace. A small section of the granite parapet, which extends around the Terrace, is seen at each end of the cut. The small light spots in Memorial Hall and the Catacomb, are the small windows previ ously described. The elevation at the south side is a profile of the pedestal for the statue of Lincoln. It is thirty-five and a half feet above the ground line, and nineteen feet eight inches above the Terrace.

In preparing the granite for the monument, a series of ashlars, two feet by two feet nine inches, are so dressed that each presents the appearance of a raised

shield. The names of the States are engraved on these shields. The shortest are given in full, and the longest abbreviated. These shields form a part of the wall, around the entire base, and the four pedestals, alternating with an ashlar of the same size. On each of these alternating ashlars, are two raised bands, running horizontally, giving to the States the appearance of being linked together, as it were, by an endless chain. The body of the granite is dressed to a true surface, and the bands and letters are polished. To complete a course around the edifice, there were three more shields than the whole number of States. These three are built in at the east side, and left blank, ready to receive the names of any States that may hereafter, be admitted. (See Fig. 10.)

The following is the order in which the States are placed, beginning on the east side, at the right of the blanks, and continuing to the right around the monument. The names of the original thirteen States are first given, and then the newer States, in the chronological order of their admission into the Union. As the names of the States are all abbreviated, except two, I first give the abbreviation exactly as it is on the stone, and immediately follow it with the name in full.

Va. for Virginia; Ñ. Y. New York; Mass. Massachusetts; N. H. New Hampshire; N. J. New Jersey ; Del. Delaware; Conn. Connecticut; Md. Maryland; R. I. Rhode Island; N. C. North Carolina; S. C. South Carolina; Penn. Pennsylvania; Ga. Georgia; Vt. Vermont; Ky. Kentucky; Tenn. Tennessee; Ohio; La. Louisiana; Ind. Indiana; Miss. Mississppi; Ills. Illinois; Ala. Alabama; Me. Maine; Mo. Missouri; Ark. Arkansas; Mich. Michigan; Tex. Texas; Fla. Florida; Iowa; Wis. Wisconsin; Cal. California; Minn. Minnesota; On. Oregon; Kan. Kansas; W. Va. West Virginia; Nev. Nevada; Neb. Nebraska; ending at the left of the three blank shields.

This cordon of States is twenty-three feet above the

ground, seven feet above the Terrace, and three feet below the top of the pedestals on which the four groups of statuary are to stand, previously described as representing the Infantry, Cavalry, Artillery, and the Navy. The names of the States, as above described, and

LINCOLN,

in raised letters on the front of the pedestal for his statue, constitute the whole of the inscriptions on the Figure 8 is a view of one of the four

monument.

round pedestals.

This is one of the four for the support of the groups of statuary, and is situated at the southwest corner of the monument, showing that part of it above the TerThe tablets are all of the same size, but the pedestal being round, as it recedes, Missouri, on the

race.