In the North Corridor, the subjects of Mr. Perry’s two decorations are Greek and Persian Inspiration. The former is represented by the Priestess of the world-renowned Oracle of Apollo at Delphi. She is seated upon a tripod, placed above a mysterious opening in the earth, from which the sacred fumes rise to intoxicate the Priestess, and fill her with the spirit of prophecy. On one side of the panel, an old man, standing for Greek science and philosophy, takes down her words on a tablet; on the other is a nude female figure, personifying Greek art and literature. In the second panel, that of Persia, the face of the Sibyl is veiled, to signify the occult wisdom of the East. A man prostrates himself at her feet in a fervor of religious devotion, and a woman, nearly nude, stands listening in the background. With her voluptuous figure and her ornaments of pearl and gold--a fillet, anklets, armlets, and necklace--she represents the luxuriance and sensuousness of Eastern art and poetry. [Illustration: BOTANY. BY WALTER SHIRLAW.] =Mr. Shirlaw’s Paintings.=--The subjects of Mr. Shirlaw’s figures in the vault of the West Corridor are, on the west, beginning at the left: _Zoölogy_, _Physics_, _Mathematics_, and _Geology_; and on the east, again beginning at the left: _Archæology_, _Botany_, _Astronomy_, and _Chemistry_. Each science is represented by a female figure about seven and a half feet in height. The figures are especially interesting, aside from their artistic merit, for the variety of symbolism by which every science is distinguished from the others, and for the subtlety with which much of this symbolism is expressed. Not only is each accompanied by various appropriate objects, but the lines of the drapery, the expression of the face and body, and the color itself are, wherever practicable, made to subserve the idea of the science represented. Thus the predominant colors used in the figure of _Chemistry_--purple, blue, and red--are the ones which occur most often in chemical experimenting. In the pendentive of _Geology_, Mr. Shirlaw employs principally purple and orange; the former is the ruling color in many of the more common rock formations when seen in the mass and naturally; and the latter is the color of the ordinary lichens one finds on boulders and ledges. In the matter of line, again, the visitor will notice a very marked difference between the abrupt, broken line used in the drapery of _Archæology_, and the moving, flowing line in that of _Physics_. In both cases it will be found that the line is in very complete sympathy with the character of the science depicted. The method of archæology is largely excavation carried on among sculptural and architectural fragments. The swirling drapery of _Physics_ is suggestive of flame and heat.