This was the first, but unhappily not the last, battle-field on which English and French slaughtered each other for the sake of a Spanish tyrant. Overjoyed at this success Don Pedro presented to his deliverer then and there the splendid Ruby in order to get which he had murdered Abu Said. Immediately afterwards he went off to Seville to collect the rest of the promised treasure. So he said at least, but the treasure never came, and the Black Prince, after losing half his army from sickness, was obliged to quit Spain without other payment than the Ruby. He wore the gem in his hat, as an original and contemporaneous picture of him which Walpole saw testifies. It is said that in the fever-stricken plains of the Peninsula the Black Prince inhaled the germs of the disease which a few years afterwards carried him to the grave. The Ruby, large and splendid though it be, was dearly bought at such a price. Don Pedro was stabbed to the heart a few years afterwards by his victorious brother Henry, as he knelt before him praying for mercy. Here the curtain falls upon the first scene in the drama of our Ruby. It rises again on the field of Agincourt, October 25, 1415. Henry V. of England, with his army reduced to fifteen thousand men, was falling back upon Calais from Harfleur when at Agincourt he encountered the French king and his nobility followed by an army of nearly fifty thousand men. The night before the battle Henry spent in disposing his forces to the best advantage, and on the morning he arrayed himself with a gorgeousness which has been commented upon by all contemporary writers. It was the fashion for kings to go splendidly into battle, and for a handsome young king of twenty-five like Henry it was only natural that he should follow such a fashion to the fullest. His armor was gilt-embossed, but his helmet was the theme of especial praise. The useful iron head-piece was surmounted by a rich crown garnished with rubies, sapphires and pearls valued then at six hundred and seventy-five pounds.[I] In this glittering ornament the Black Prince's Ruby was a conspicuous feature. During the fight the king and his shining crown were to be seen in all parts of the field where the battle raged hottest. He fought like a lion for his life, unlike the kings of modern times who, if present at all, sit afar off and view the battle-field safely through telescopes. [I] It must be remembered that the money value of the pound sterling in Henry's time was three or four times what it is now.