The picture presented was now indescribable. Groups of Indians surrounded the basin; the Horses with bristling mane, terror and grief in their eyes, trying to escape from the storm which had surprised them; the Eels, yellow and livid, looking like great aquatic Serpents swimming on the surface of the water, and chasing their enemies, were objects at once appalling and picturesque. In less than five minutes two Horses were drowned. When the struggle had lasted a quarter of an hour, the Mules and Horses appeared less frightened, the manes became more natural, the eyes expressed less terror, the Eels shunned, in place of attacking them; at the same time approaching the bank, when they were easily taken by throwing little harpoons at them attached to long cords; the harpoon, sometimes hooking two at a time, being landed by means of the long cord. They were drawn ashore without being able to communicate any shock. Having landed the Eels, they were transported to little pools dug in the soil, and filled with fresh water; but such is the terror they inspire, that none of the people of the country would release them from the harpoon—a task which the travelers had to perform themselves, and receive the first shock, which was not slight—the most energetic surpassing in force that communicated by a Leyden jar, completely charged. The Electrical Eel surpasses in size and strength all the other Electric Fishes. Humboldt saw them five feet three inches long. They vary in color according to age, and the nature of the muddy water in which they live. Beneath, the head is of a fine yellow color mixed with red; the mouth is large, and furnished with small teeth arranged in many rows. The Electrical Eel gives the most frightful shocks without the least muscular movement in the fins, in the head, or any other part of the body. The shock, indeed, depends upon the will of the animal, and in this respect differs from a Leyden jar, which is discharged by communicating with two opposite poles. It happens sometimes that an Electrical Eel, seriously wounded, only gives a very weak shock, but if, thinking it exhausted, it is touched fearlessly, its discharge is terrible. SEA EELS. [Illustration: SEA EEL.] The Sea Eels are slender, serpent-like Fishes, that are very strong and active, and they swim with the same waving movements in the water, as the serpents use in creeping on dry land. These Eels feed on small Fishes, Crabs, etc., and are such hungry fellows that when other food fails they begin to nibble at each other’s tails. It is difficult to catch a Sea Eel; they are usually caught with rod and line, or with line and ground bait, but they are quick in making their escape. When they have swallowed a hook they will often cut the line with their teeth, or they turn upon it, and try, by winding it round some object, to strain or break it. When caught in a net they quickly choose some mesh through which their body can glide.