May 30 Providence the back whil (and the bottom) is lined with neutral gray linen, iving a very pleasing effect; a 2 rail (high) base, with glass on ll bot back side; whole 7 ft. high. Then there is his admirable small movable habitat case or "box group case", not built in. Outside immersion 5' x 7' x 4', with 3 ft. square glass in front; the lower edge of this front glass 30" from floor; this glass too slants in from top to bottom, with to every part of height, thus disposing of the reflections that are usually so troublesome. The fore and aft depth (4 feet) is sufficient to allow of all sorts of background effects; tho a single study as preferred, as with a painting - not complicated. Complexity destroys artistic effect.