Albucasis, a Spanish Arab of the eleventh century, is supposed from some obscure expressions in his writings to have known how to make a spirit from wine; but Arnold of Villa Nova, who wrote in the latter part of the thirteenth century, is the first explicitly to refer to it. He does not intimate that he had discovered it himself, but he appears to treat it as something comparatively new. Aqua vini is what he calls it, but some name it, he says, aqua vitæ, or water which preserves itself always, and golden water. It is well called water of life, he says, because it strengthens the body and prolongs life. He distilled herbs with it such as rosemary and sage, and highly commended the medicinal virtue of these tinctures. It is worth remarking that when Henry II invaded and conquered Ireland in the twelfth century the inhabitants were making and drinking a product which they termed uisge-beatha, now abbreviated into whisky, the exact meaning of the name being water of life. Raymond Lully, who acquired much of his chemical lore from Arnold of Villa Nova, was even more enthusiastic in praise of the aqua vitæ than his teacher. “The taste of it exceedeth all other tastes, and the smell all other smells,” he wrote. Elsewhere he describes it as “of marveylous use and commoditie a little before the joyning of battle to styre and encourage the soldiers’ minds.” He believed it to be the panacea so long sought, and regarded its discovery as evidence that the end of the world was near. The process for making the aqua vitæ as described by Lully was to digest limpid and well-flavoured red or white wine for twenty days in a closed vessel in fermenting horse-dung. It was then to be distilled drop by drop from a gentle fire in a sand-bath.