[Footnote 112: The junction of the Rhine and Danube was
undertaken only for the service of the Pannonian war,
(Gaillard, Vie de Charlemagne, tom. ii. p. 312-315.) The
canal, which would have been only two leagues in length, and
of which some traces are still extant in Swabia, was
interrupted by excessive rains, military avocations, and
superstitious fears, (Schaepflin, Hist. de l'Academie des
Inscriptions, tom. xviii. p. 256. Molimina fluviorum, &c.,
jungendorum, p. 59-62.)]