said that the _Crotalidæ_ are some of the most dangerous of any Snakes; let us mention some facts which show the frightful power of their venom. A _Crotalus_, about three feet in length, killed a Dog in about fifteen minutes, a second in two hours, and a third in about four hours. Four days after he bit another Dog, which only survived thirty seconds; and another, which only struggled four minutes. Three days afterwards it bit a Frog, which died at the end of two seconds; and a Chicken, which perished at the end of eight minutes. [17] Dekay, in his "Natural History of New York," remarks that it is a popular belief that Hogs are particularly destructive to Rattlesnakes; but neither their bristly hide nor their thick teguments afford them perfect immunity from the stroke of this reptile. I was informed by a respectable farmer that he lost three Hogs in one season by the poison either of the Copperhead or Rattlesnake.--ED. An American, named Drake, arrived at Rouen with three live Rattlesnakes. In spite of the care which he had taken to preserve them from cold, one of them died. He put the cage which contained the other two near to a stove, and excited them with a small stick, to assure himself that they were alive and in health. As one of the Snakes made no movement, Drake took it by the head and tail and approached a window to see if it was dead; the animal turned its head quickly, and bit the unfortunate man on the back of his left hand; as he replaced it in the cage he was bitten anew in the palm of the same hand. "A doctor! a doctor!" cried the unhappy man. He rubbed his hand upon some ice which was close by, and two minutes after, he bound the wrist tightly with a cord. Four hours later a doctor arrived, and cauterized the wound, but alarming symptoms soon appeared. Syncope, noisy respiration, scarcely any pulsation, and involuntary evacuations followed; the eyes closed, their pupils contracted; the limbs became paralyzed, and the body cold. Drake died at the end of nine hours.