Both genera are characterized by their habit of secreting a tubular gelatinoid investment, the "coenoecium," composed of a number of superposed lamellae, doubtless the result of its intermittent secretion, mainly though perhaps not exclusively, by the proboscides of the zooids.
The precarious position of the province on the borders of the country doubtless militated against an earlier industrial development, but since the separation from Belgium and the construction of roads, railways and canals there has been a general improvement, Tilburg, Eindhoven and Helmond all having risen into prominence in modern times as industrial centres.
It was doubtless a revulsion of feeling against the doctrinaires and in particular against the puritanic reign of Michel that made her turn to Chopin.
He studied at Alexandria and doubtless met there Conon of Samos, whom he admired as a mathematician and cherished as a friend, and to whom he was in the habit of communicating his discoveries before publication.
More important, as being doubtless connected with the discovery of the principle in hydrostatics which bears his name and the foundation by him of that whole science, is the story of Hiero's reference to him of the question whether a crown made for him and purporting to be of gold, did not actually contain a proportion of silver.