[AS.] A kind of fish with a strong smooth skin, a vast quantity of small scales, and a long thin body. Though it has the head of a fish it has no gill covers, but only a small hole. Its dorsal and anal fins run along nearly one-third of the body, but some species are nearly destitute of fins and have ho scales. Eels mostly abound in waters which communicate with the sea and some species live only in sea-waters. The freshwater eel can creep over the ground like snakes, and sometimes passes the winter in a torpid state in mud. It has transparent horny coverings to defend its eyes from mud and stones. Eels are the terror of most other fish, and attack their prey by day and by night. The murry eel abounds in the Mediterranean and other warm seas, and the Romans esteemed it a delicacy. Eels are caught by eel-bucks, eel-sets or nets, and bobs or worms and worsted. Electric eels are found at the mouth of the Orinoco in pools after a flood, where they are harpooned by the natives, who drive wild horses into the water to receive their electric shocks. These eels are large, yellow, and livid, and arch their bodies, straightening themselves with a jerk, and curving back again when they produce the shock. The shock is severe enough to knock down men or animals. The electricity is generated by cells in the lower part of the body, and the number of cells varies according to the size of the fish.