The corky layers which take so prominent a share in the formation of the bark are similarly modified and subserve the same purpose.
Nevertheless the judgment of history declares that this brilliant exploit was entirely eccentric, and could only in indirect ways subserve theological study.
They enlarge and diminish, and are possibly excretory like the " contractile vacuoles " of other Protista; though it has been suggested that by their communication with the medium they subserve nutrition.
Traditionally, the basal ganglia have been associated with motor processes, although recent evidence suggests that they may also subserve parallel cognitive functions.
Hence arises the conception of rights and duties which should be maintained by law, as opposed to those actually maintained; with the further consequence that it may become occasionally a moral duty to rebel against the state in the interest of the state itself, that is, in order better to subserve that end or function which constitutes the raison d'être of the state.