If now, when the muscle begins to lag in its response, and its contractions to decrease, one injects into a vein extracts of thyroid, parathyroid, or adrenal glands, they will immediately reinvigorate the failing contractions.

It had not abandoned the idea of resuming the struggle by taking advantage of those complications that might be easily foreseen between Rome and the eastern powers; and, as the failure of the magnificent scheme of Hamilcar and his sons had been due mainly to the Carthaginian oligarchy, the chief object was internally to reinvigorate the country for this new struggle.

The day spent in the open air, with plenty of the best eating and drinking which could be found in the ship, had greatly reinvigorated the released prisoners, and when at daybreak the vessels behind were seen to be closing up, all were ready for the fight.

But in mountain-locked Roussillon and Asturias remnants of slavery persisted from Visigothic times to the seventeenth century; and in other parts of the peninsula the intermittent wars against the Moors of Granada supplied captives and to some extent reinvigorated slavery among the Christian states from Aragon to Portugal.