In 1879 Dr. Tergast, of Emden, published a short account of the
prehistoric antiquities of East Friesland,[70] in which he takes
notice of the existence of certain mounds, in the low-lying regions,
called "Warfen," which he believes to be the remains of very ancient
settlements constructed for the protection of their inhabitants
against floods and the fluctuations of the surrounding waters. The
author does not give many details about these mounds. It would appear,
however, that they are to be met with in considerable numbers, as he
suggests that it would be of the highest interest to archæological
science to have a map constructed showing their local distribution.
Nor do they appear to have been subjected to much practical
investigation, as only three objects from them are illustrated in
Dr. Tergasts book. These are a bone implement (so-called skate or
cloth-polisher), a necklace of glass and amber beads, and an iron
arrow-point. He also figures a comb (six inches long) similar to
that from the _terpen_ (=Fig. 100=, No. 30), but without specifying
the locality where it was found. All these are precisely similar
to objects found in the terp-mounds of Holland. Every indication,
therefore, points to the conclusion that the _Terpen_ and _Warfen_ are
quite analogous to each other and belong to the same period of time.