For some reason that we cannot now discover, the unicorn was an especial favourite with the Scotch heralds, and it is from them that we derive it in our royal arms. Before the union of the two monarchies the supporters of the arms of the English monarchs had been very various, though in almost every case a lion had been one of the two employed,[2] while in Scotland for several reigns before the amalgamation of the two countries the supporters had been two unicorns. It was very naturally arranged, therefore, when the two kingdoms were fused together on the death of Elizabeth, that the joint shield should be supported by the lion of England and the unicorn of Scotland. The creature freely occurs as a device on the Scottish coinage; one piece especially is by collectors called the unicorn, from the conspicuous introduction of the national device.
[2] As for example:--Henry VI., Lion and Antelope; Edward IV., Lion and Bull; Edward V., Two Lions; Richard III., Lion and Boar; Henry VII., Lion and Dragon; Henry VIII., Lion and Dragon; Mary, Lion and Greyhound; Elizabeth, Lion and Greyhound.
We have already indicated that potent virtues were believed to reside in the horn of the unicorn. In the Comptes Royaux of France in 1391 we find a golden cup with a slice of this horn in it for testing the food of the Dauphin, and again in the inventory of Charles V.--"Une touche de licorne, garnie d'or, pour faire essay." Decker, again, in 1609 speaks of "the unicorn, whose horn is worth a city." In Mrs. Bury Palliser's most interesting work of "Historic Badges and Devices" we find an illustration of the standard of Bartolomeo d'Alviano. He was a great champion of the Orsini family, and took a leading part in all the feuds that devastated Central Europe during his lifetime. His standard bears the unicorn, surrounded by snakes, toads, and other reptiles then rightly or wrongly held poisonous; these he is moving aside with his horn, and above is the motto, "I expel poisons"--he, d'Alviano, of course, being the lordly and potent unicorn, his foes the creeping things to be driven from his face.[3]
[3] The English Cyclopædia of Natural History gives a description by Ctesias of the Indian ass. He says that these animals are as large as horses, and larger, having a horn on the forehead, one cubit long, which for the extent of two palms from the forehead is entirely white; above, it is pointed and red, being black in the middle. Of this horn drinking-cups are formed, and those who use them are said not to be subject to spasm or epilepsy, nor to the effects of poison, provided, either before or after taking the poison, they drink out of the cup wine, water, or any other liquid.