This is a pretty clever piece of primitive gadgetry, actually. Fundamentally, it's your basic blowgun -- a long tube that you blow air into, in order to shoot a poisoned dart out the other end. This one, however, has been fitted with a little hopper of needles on one side, which roll one by one into the tube to keep it loaded. On the other end, there's a little thing that looks like a garlic press, which you put one of those bright orange jungle frogs in, and the poison drips into the barrel of the blowgun and poisons the needles as they fly out. Neat!