We are now indebted to a correspondent, Mr. Wm. Y. Beach, of the Grand View Mine, Grant County, Southern Arizona, for a fine specimen of this singular reptile, just received alive. The example sent to us is about twenty inches long, and answers very well to the description of the monster and the engraving above given. In the course of an hour after opening the box in which the reptile had been confined during its eight days' journey by rail, it became very much at home, stretching and crawling about our office floor with much apparent satisfaction. Our correspondent is located in the mountains, some nine miles distant from the Gila River. He states that the reptile he sends was found in one of the shops pertaining to the mine, which had been left unoccupied for a week or so. Apropos to the foregoing, we have received the following letter from another correspondent in Arizona: _To the Editor of the Scientific American:_ My attention has been called to an article in your issue of Oct. 7, 1882, relating to the _Heloderma horridum_, or commonly known as the Gila Monster. During a residence of ten years in Arizona I have had many opportunities of learning the habits of these reptiles, and I am satisfied their bite will produce serious effects, if not death, of the human race. I know of one instance where a gentleman of my acquaintance by the name of Bostick, at the Tiga Top mining camp, in Arizona, was bitten on the fingers, and suffered all the symptoms of poison from snake bite. He was confined to his bed for six weeks and subsequently died. I am of the opinion his death was in part caused by the effects of the poison of the Gila Monster. The Hualzar Indians are very much afraid of them, and one I showed the picture to of the Monster in your paper remarked, "Chinamuck," which in Hualzar language means "very bad." He said if an Indian is bitten, he sometimes dies. I have seen them nearly two feet in length. Never, to my knowledge, are they kept as pets in our portion of Arizona. They live on mice and other small animals, and when aggravated can jump several times their length. W.E. DAY, M.D. Huckberry, Mahone Co., Ar. T., April, 1883. * * * * * THE KANGAROO. _To the Editor of the Scientific American:_