The Liassic beds are often metamorphosed and the limestones contain garnet and wollastonite.
The Curia, once so corrupt, was completely metamorphosed, and once more became a rallying point for men of stainless character, so that it produced a profound impression even on non-Catholics; while the original methods of St Philip Neri had a profound influence on the reform of popular morals.
It is noteworthy that in this family only among the Polychaeta, the nephridia are not restricted to a single pair in each segment; so that the older view that the gonad ducts are metamorphosed nephridia is not at variance with the anatomical facts which have been just stated.
A few hornblendeschists are metamorphosed gabbros; others have developed from dikes or sills of lamprophyre.
It has, in fact, become metamorphosed into a resistant supporting structure resembling in some respects the notochord of the true Chordata, but probably not directly comparable with the latter structure, being related to it solely by way of substitution.