Antler came into use for tools, especially in central and western Europe. We do not know the use of one particular antler tool that has a large hole bored in one end. One suggestion is that it was a thong-stropper used to strop or work up hide thongs (see illustration, below); another suggestion is that it was an arrow-shaft straightener. Another interesting tool, usually of antler, is the spear-thrower, which is little more than a stick with a notch or hook on one end. The hook fits into the butt end of the spear, and the length of the spear-thrower allows you to put much more power into the throw (p. 82). It works on pretty much the same principle as the sling. Very fancy harpoons of antler were also made in the latter half of the period in western Europe. These harpoons had barbs on one or both sides and a base which would slip out of the shaft (p. 82). Some have engraved decoration. THE BEGINNING OF ART [Illustration: THONG-STROPPER] In western Europe, at least, the period saw the beginning of several kinds of art work. It is handy to break the art down into two great groups: the movable art, and the cave paintings and sculpture. The movable art group includes the scratchings, engravings, and modeling which decorate tools and weapons. Knives, stroppers, spear-throwers, harpoons, and sometimes just plain fragments of bone or antler are often carved. There is also a group of large flat pebbles which seem almost to have served as sketch blocks. The surfaces of these various objects may show animals, or rather abstract floral designs, or geometric designs. [Illustration: “VENUS” FIGURINE FROM WILLENDORF] Some of the movable art is not done on tools. The most remarkable examples of this class are little figures of women. These women seem to be pregnant, and their most female characteristics are much emphasized. It is thought that these “Venus” or “Mother-goddess” figurines may be meant to show the great forces of nature--fertility and the birth of life. CAVE PAINTINGS In the paintings on walls and ceilings of caves we have some examples that compare with the best art of any time. The subjects were usually animals, the great cold-weather beasts of the end of the Ice Age: the mammoth, the wooly rhinoceros, the bison, the reindeer, the wild horse, the bear, the wild boar, and wild cattle. As in the movable art, there are different styles in the cave art. The really great cave art is pretty well restricted to southern France and Cantabrian (northwestern) Spain.