Page:Tropical Diseases.djvu/744

692 efforts to escape. After a time, the majority succeed in effecting a breach and in wriggling themselves free from the sheaths which had hitherto enclosed them (Fig. 101). The microfilaria now swims free in the blood, the character of its movements once more undergoing a remarkable change. Hitherto, though active enough in wriggling about, the parasite did not materially change its position on the slide; but



now, having become free, it moves about from place to place—locomotes, in fact. If we dissect a