So daring were the river horses, that one of them struck a hole in the boat with his teeth, an accident which was rather of a serious nature, as there was no one on board possessing any skill in carpentry; and as one attack had been made, great apprehension was entertained that it might be renewed, and the consequences prove of the most fatal kind.

They, however, fell upon the expedient of fixing a lantern at the stern of the vessel, which kept the monsters at a respectful distance; they showing great alarm at any light shining in the dark.

On one occasion, when they landed for the purpose of searching for gold, they found the territory guarded by an incredible number of huge baboons, who seemed determined to enter into open conflict with them, and to set at defiance every attempt that was made to penetrate into the territory.

If the sailors shouted to them; the baboons set up a loud scream, showing their white teeth, and making known the reception which the intruders would meet with, if they made any further advances.
Finding that neither their oratory nor their menaces had any effect upon the baboon army, a few guns were discharged at them, which seemed rather to astonish them, for it was something which they had never seen nor heard before; but as no immediate effect was visible amongst their army, they began to consider the firing as a sort of joke, and prepared to drive the invaders back to their boats.

A volley, however, from the human assailants, by which three of the baboon army were laid prostrate, soon convinced the latter, that the firing was no joke, and after making some slight show of resistance, they carried away the dead, and retreated to the woods.
The discovery of gold being the principal object of the adventure of Vermuyden, he landed frequently in different places, and proceeded to wash the sand, and examine the rocks.