In 1847, Dr. Savage had the good fortune to make another and most
important addition to our knowledge of the man-like Apes; for, being
unexpectedly detained at the Gaboon river, he saw in the house of the
Rev. Mr. Wilson, a missionary resident there, "a skull represented by
the natives to be a monkey-like animal, remarkable for its size,
ferocity, and habits." From the contour of the skull, and the
information derived from several intelligent natives, "I was induced,"
says Dr. Savage (using the term Orang in its old general sense) "to
believe that it belonged to a new species of Orang. I expressed this
opinion to Mr. Wilson, with a desire for further investigation; and, if
possible, to decide the point by the inspection of a specimen alive or
dead." The result of the combined exertions of Messrs. Savage and
Wilson was not only the obtaining of a very full account of the habits
of this new creature, but a still more important service to science,
the enabling the excellent American anatomist already mentioned,
Professor Wyman, to describe, from ample materials, the distinctive
osteological characters of the new form. This animal was called by the
natives of the Gaboon "Enge-ena," a name obviously identical with the
"Ingena" of Bowdich; and Dr. Savage arrived at the conviction that this
last discovered of all the great Apes was the long-sought "Pongo" of
Battell.

The justice of this conclusion, indeed, is beyond doubt--for not only
does the 'Enge-ena' agree with Battell's "greater monster" in its
hollow eyes, its great stature, and its dun or iron-grey colour, but
the only other man-like Ape which inhabits these latitudes--the
Chimpanzee--is at once identified, by its smaller size, as the "lesser
monster," and is excluded from any possibility of being the 'Pongo,' by
the fact that it is black and not dun, to say nothing of the important
circumstance already mentioned that it still retains the name of