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Macintosh Picture Format  |  1996-09-10  |  11.6 KB  |  640x40  |  4-bit (8 colors)
   ocr: This 4 1/2 ton block of azurite and malachite, five feet tall, was once known as the singing stone" because it 'whistled" with changing humidity when it was exhibited prior to modern climate control. (Photo by H. and E. Van Pelt)