e crystals composing the marble had real. The rock employed for purposes of experiment wet squeeze,” in which the rock; while heated, is been broken and the fragments had passed over one was Carrara marble, small columns of which were another, but had remained so firmly pressed together inclosed in… … heated and rolled. the iron tubes as above described, might, Our engravings show microphotographs at the ordinary temperature, be de- of a section of the marble before squeez- formed, the marble column being ing, and the same marble after it has squeezed down and the inclosing iron been deformed at…
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