The Nuttall Encyclopedia
A giant in the Norse mythology, slain by the gods, and out of whose carcass they constructed the world, his blood making the sea, his flesh the land, his bones the rocks, his eyebrows Asgard, the dwelling-place of the gods, his skull the vault of the firmament, and his brains the clouds.
Wood, James, ed. Entry for 'Ymir'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/y/ymir.html. Frederick Warne & Co Ltd. London. 1900.