Glazing can be either glass or acrylic. Only glass should be used with any friable media such as unfixed pastels, charcoals, or graphite, never acrylic as it can damage the work by attracting these materials. There are many brands of acrylic glazing to choose from; one with an ultraviolet filter is recommended. The frame and the mat should be deep enough to prevent the artwork from touching the glazing. A stiff backboard behind the mat protects and supports the matted artwork. It is best to use non-acidic boards. A dust seal with paper or tape is also recommended. What damage results from using poor quality mat board? Avoid mat boards containing wood pulp which causes "matburn"--a darkening of the paper under the mat or at the bevel cut of the window mat. This devilclipart type of stain permanently weakens the paper fibers and is not easily removed or lightened in conservation treatment.

Innocence and Experience deals principally with the shift in recent decades from a positive, hopeful vision of childhood’s purity and power to a counter-imagery of youth threatened or corrupted. The gallery exhibition includes works by Diane Arbus, Robert Gober, Mona Hatoum, and Mike Kelley. devilclipart An accompanying film and video exhibition includes films and videos by Stan Brakhage, Joseph Cornell, Sadie Benning, Louis Malle, Satyajit Ray, and Arturo Ripstein. Matter investigates the new role of materials in fine arts and design, as well as its force in inspiring and guiding the creative process, by considering and connecting several distinct creative fields. Works by Joseph Beuys, Robert Morris, Gaetano Pesce, Mona Hatoum, Eva Hesse, designers Hella Jongerius devilclipart and Tom Dixon, and photographer Vik Muniz are shown.