The youngest polyp of the system is the one nearest to the topmost polyp; and the axis of the system is a true axis.
In cases where the cormus has no pneumatophore the topmost swimming bell may contain an oil-reservoir or oleocyst.
One of the Allies' columns nevertheless succeeded in establishing itself on a patch of the topmost ridge and in holding on to what had been secured, although the efforts of the assailants miscarried elsewhere.
On its topmost bough sits an eagle, between whom and Nidhug the squirrel Ratatbskr runs to and fro trying to provoke strife.
Hence, in a colony of gymnoblastic hydroids, the oldest polyp of each system, that is to say, of the main stem or of a branch, is the topmost polyp; II ?a ` FIG.