They sometimes cause a serious dislocation of railway and other traffic. Their principal cause is the smoke from the general domestic use of coal.
In this way, Qwing to the dislocation of the ancient aristocracy, to the enlarged jurisdiction,of a power so democratic as the episcopate, and to the increased privileges of the burghs, feudalism received a powerful check in Italy.
In the ostrich, Struthio, the craze of overloading the stomach with pebbles which, when triturated into sand, are not voided, has brought about a dislocation, so that the enormously widened and stretched space between proventriculus and gizzard forms a bag, directed downwards, whilst the gizzard itself with part of the duodenum is rotated round its axis to more than loo°.
A similar rotation and dislocation occurs in various petrels, in correlation with the indigestible sepia-bills, &c., which these birds swallow in great quantities.
The confluence of the regions of the body and the dislocation of apertures from their typical position are results of degeneration.