A person ignorant of the cause might have supposed that every man of the party had been seized with Saint Vitus' dance--not a man could retain his seat or keep his hands quiet for a moment, for while he tried with one hand to get his food or a cup to his mouth, the other was employed in slapping right and left, now at his cheek, now at his other hand or at his feet, in vain endeavours to destroy his persevering foes; for the instant a wreath of smoke blew to one side, a whole host of ferocious insects darted forward to assail their victims on the other. Cigars and pipes were quickly lighted, in the hopes of driving off the pests, but in vain; the fumes of tobacco had but little effect, for if a puff drove them off a man's nose, in an instant they attacked some other part of his body. In spite of this inconvenience, Murray had again to give the account of his recent exploit, while the midshipmen recounted for the twentieth time their adventures and imprisonment in Carthagena. No sooner had night closed down on the camp than cries of all descriptions came forth from the forest--the croaking of frogs, the chirping of crickets, the howling of monkeys, mingled with strange groans and shrieks, which made the seamen draw closer together, some, even among the stoutest-hearted, declaring that without doubt the place was haunted, while many a brave tar cast a glance over his shoulder, expecting to see some fierce creature stalk out from among the trees. At last Captain Hemming gave the order for all hands to turn in, with such shelter as they had provided, and to get some sleep to prepare themselves for the work of the next day. Some went on board the boats, hoping to be free of the bites of the mosquitoes, though hopeless were their efforts to escape from their tormentors. The three lieutenants seated themselves side by side, while their young relatives, the three midshipmen, had collected not far off. "Well, I suppose we must go to sleep," said Tom Rogers, stretching himself out. He had rolled up his flushing coat to serve as a pillow, and prepared to enjoy as much comfort as circumstances would allow. "Faith, we have music at all events to lull us to sleep," exclaimed Gerald Desmond; "but I wish those beasts would put a stopper to their singing, though!" "They may sing as long as they like, provided they don't bite," remarked Gordon, following his companions' example. In a short time the whole camp was at rest, with the exception of the few sentries, the only sounds being the mysterious ones which came at intervals from the forest, and the loud snoring of some of the soldiers and seamen. The fires still kept blazing, casting a lurid glare over the foaming waters as they rushed past, on the tall trees of the dark forest on the other side, and on the figures of the officers and men stretched in various attitudes on the ground.