The expert proceeded to point out the architectural balance of the buildings. The severe and mighty Palace of Machinery, impressive in its long sweep of line, at one side made a dramatic contrast with the delicately imagined and poetic Palace of Fine Arts on the other. In front of the walled city, between the long stretch of garden, stood two harmonious buildings, the Palace of Horticulture, with its glorious roof of glass, and the Festival Hall, closely related in outline, and yet very different in detail. And the garden itself, with its dark, pointed trees standing against the wall, and with its simplicity of design, made an agreeable approach to the great arched entrance under the Tower of Jewels. "Those banners down there, shielding the lights, are a stroke of genius, both in their orange color and their shape. And those orange-colored streamers, how they add to the spirit of gaiety. The trees have been placed against the wall to keep it from seeming like a long and uninteresting stretch. And observe the grace in line of the niches between the trees. Even from here you can feel the warmth of the color in the paths. The pink effect is made by burning the sand. Only a man like Guerin, a painter, would have thought of that detail. I wonder how many visitors down there know that the very sand they walk on has been colored." Around the Tower pigeons were flying, somehow relieving the mechanical outlines. Was the disproportion between the great arch, forming a kind of pedestal, and the outlines above due to mathematical miscalculation or to the interference of the ornamentation? We finally decided that the proportions had probably been right in the first place. But they had been changed by the Exposition authorities' cutting the Tower down one hundred feet, thereby saving $100,000. A matter of this kind could be reduced almost to an exact science. Besides, though the ornamentation interfered with the upward sweep of line, the effect of flatness was made by those horizontal blocks which seemed to be piled up to the top. If the outline had been clean, it would have achieved the soaring effect so essential to an inspiring tower, creating the sense of reaching up to the sky, like an invocation.