[Footnote 72: One of the most curious of these natural portraits is the
enormous rock in Wales, known as the Pitt Stone. It is an immense
fragment, the outline bearing a perfect resemblance to the profile of
the great statesman. The frontispiece to Brace's "Visit to Norway and
Sweden" represents an island popularly known as "The Horseman's Island,"
that takes the form of a gigantic mounted horseman wading through the
deep. W.B. Cooke, the late eminent engraver, amused himself by depicting
a landscape with waterfalls and ruins, which, when turned on one side,
formed a perfect human face.]