The antler has a core of solid bone covered by a continuation of the soft skin of the head, which bears a close pile of short hair and is known as the velvet. When the core has attained to its proper solidity and hardness, the growth of the rough burr at its base, pressing on the blood vessels and stopping their further supply to the velvet above, causes the death of the latter; and the Deer by rubbing the new structure against tree trunks and branches, tears off the velvet in strips, and is then able to do battle with his peers. The ensuing period of sexual unrest having been passed through safely, the whole structure down to the burrs is parted with, and a finer set of antlers begun. The whole process of antler growth occupies about ten weeks, and during this period the Stag is always in poor condition, and seeks solitude. What becomes of the dropped antlers is somewhat of a mystery, as few of them are found, and these usually odd ones. If one were seeking to judge the habits of the Red Deer from a finely stuffed specimen in, say, the Natural History Museum, standing erect with fully developed antlers, one would feel justified in saying, as many have said--"This is a creature of the open mountain-side and the moorland, where there are no trees whose branches could entangle these branching horns. No adornment could be better fitted for keeping the noble beast out of the woods." Yet the Deer can actually run through dense woods with ease, and we know from its habitats in other countries where it is still plentiful, that it is a true woodland animal. The explanation is evident if, during a Stag hunt, we see the hunted seek refuge in a wood. The Stag throws his head back so that his antlers lie along each side and protect his body from many a bruise that might otherwise be inflicted by the branches as he rushes through the undergrowth. The antlers may be used with deadly effect in self-defence, and many a hound is killed by a Stag at bay. Their function appears to be mainly protective against carnivorous beasts; they are seldom if ever effective against those of their own kind.