Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 236
gion was folded and became a moun-tainous area, and in the process all these beds ofrock were squeezed and folded and in some placescrumpled or twisted into fantastic forms. Wher-ever the impure beds occurred they became con-spicuous because of their difference of color.They appear, therefore, to… … THE SERPENT IN A MANHATTAN ROCK. similar modification in the mountain-foldingoperation. At the same time all the rocks were metamorphosed; that is, they were workedover, or modified, or made more crystalline, sothat now they are almost like marble. The serpent-like markings are therefore onlythe…
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