1 De institutione musica ('On the Fundaments of Music', beginning of the 6th c.)  Eclectic treatise influenced by the ancient Greek treatises on the theory and ethics of music, such as those of Aristotle and Ptolemy, Pythagoras and Aristoxenus.
hempen, fibrous(adj) having or resembling fibers especially fibers used in making cordage such as those of jute. fibrous, sinewy, stringy, unchewable(adj) (of meat) full of sinews; especially impossible to chew.
The fibrous pericardium is the outermost layer of the pericardial membranes around the heart. It is a tough, collagenous sheet that is superficial to the parietal layer of the serous pericardium. The two are separated by a thin layer of amorphous connective tissue. Conical in shape, it fuses and is continuous with: