ound to-day.
Diganhwy (Dyganwy, Deganwy) is mentioned in the _Mabinogion_ (_Geraint
and Enid_), if the reading is sound; it is certainly mentioned in the
_Annales Cambriae_ (years 812-822) and in the _Black Book of
Caerfyrddin_ (Carmarthen), xxiii. 1. Caer-hyn, 4-1/2 m. from Conway, is on
the highroad from London to Holyhead, and is the _Conovium_ of the
Romans. The site of the camp can still be traced, consisting of a
square, strengthened by four parallel walls, extending to a distance
from the main work. The camp is on a height, with the Conwy in front and
a wood on each flank. At the foot of the hill, near the stream, was a
Roman bath, with walls, pavement and pillars. Camden's _Britannia_
mentions tiles, with marks of the 10th or Antoninus's legion, as being
found here, perhaps mistakenly. _Gleini nadroedd_ (possibly amulets) and
_vitrum_ have been found here. In Bwlch y ddwy faen ("two rock ravine"),
on the way to Aber, are the remains of a Roman road and antiquities.

CONYBEARE, WILLIAM DANIEL (1787-1857), dean of Llandaff, one of the most
distinguished of English geologists, who was born in London on the 7th
of June 1787, was a grandson of John Conybeare, bishop of Bristol
(1692-1755), a notable preacher and divine, and son of Dr William
Conybeare, rector of Bishopsgate. Educated first at Westminster school,
he went in 1805 to Christ Church, Oxford, where in 1808 he took his
degree of B.A., with a first in classics and second in mathematics, and
proceeded to M.A. three years later. Having entered holy orders he
became in 1814 curate of Wardington, near Banbury, and he accepted also
a lectureship at Brislington near Bristol. During this period he was one
of the founders of the Bristol Philosophical Institution (1822). He was
rector of Sully in Glamorganshire from 1823 to 1836, and vicar of
Axminster from 1836 to 1844. He was appointed Bampton lecturer in 1839,
and was instituted to the deanery of Llandaff in 1845. Attracted to the
study of geology by the lectures of Dr John Kidd (q.v.) he pursued the
subject with ardour. As soon as he had left college he made extended
journeys in Britain and on the continent, and he became one of the early
members of the Geological Society. Both Buckland and Sedgwick
acknowledged their indebtedness to him for instruction received when
they first began to devote attention to geology. To the _Transactions of
the Geological Society_ as well as to the _Annals of Philosophy_ and