cripturae
Hispanae veteris specimina_ (1890); E. A. Bond, _Facsimiles of Ancient
Charters in the British Museum_ (1873-1878): W. B. Sanders,
_Facsimiles of Anglo-Saxon Manuscripts_ (charters) (1878-1884); G. F.
Warner and H. J. Ellis, _Facsimiles of Royal and other Charters in the
British Museum_ (1903). (E. M. T.)

DIPOENUS and SCYLLIS, early Greek sculptors, who worked together, and
are said to have been pupils of Daedalus. Pliny assigns to them the date
580 B.C., and says that they worked at Sicyon, which city from their
time onwards became one of the great schools of sculpture. They also
made statues for Cleonae and Argos. They worked in wood, ebony and
ivory, and apparently also in marble. It is curious that no inscription
bearing their names has come to light.

DIPPEL, JOHANN KONRAD (1673-1734), German theologian and alchemist, son
of a Lutheran pastor, was born at the castle of Frankenstein, near
Darmstadt, on the 10th of August 1673. He studied theology at Giessen.
After a short visit to Wittenberg he went to Strassburg, where he
lectured on alchemy and chiromancy, and occasionally preached. He gained
considerable popularity, but was obliged after a time to quit the city,
owing to his irregular manner of living. He had up to this time espoused
the cause of the orthodox as against the pietists; but in his two first
works, published under the name "Christianus Democritus," _Orthodoxia
Orthodoxorum_ (1697) and _Papismus vapulans Protestantium_ (1698), he
assailed the fundamental positions of the Lutheran theology. He held
that religion consisted not in dogma but exclusively in love and
self-sacrifice. To avoid persecution he was compelled to wander from
place to place in Germany, Holland, Denmark and Sweden. He took the
degree of doctor of medicine at Leiden in 1711. He discovered Prussian
blue, and by the destructive distillation of bones prepared the
evil-smelling product known as Dippel's animal oil. He died near
Berleburg on the 25th of April 1734.

An enlarged edition of Dippel's collected works was published at
Berleburg in 1743. See the biographies by J. C. G. Ackermann (Leipzig,
1781), H. V. Hoffmann (Darmstadt, 1783), K. Henning (1881) and W.
Bender (Bonn, 1882); also a memoir by K. Bucher in the _Historisches
Taschenbuch_ for 1858.

DIPSOMANIA (from [Gr. dipsa], thirst, and [Greek: mania], madness), a
term formerly applied to the attacks of delirium (q.v.) cau