deer, and all sorts of birds and wild animals, which lay about in profusion. The ground on which they lay at the bottom of the valley, appeared to be a hard sandy substance, and no vapour was perceived issuing from it, nor any opening through which it might escape, and the sides were covered with vegetation. It was now proposed to enter it, and each of the party, having lit a cigar, managed to get within twenty feet of the bottom, where a sickening nauseous smell was experienced, without any difficulty in breathing. A dog was now fastened at the end of a bamboo and thrust to the bottom of the valley, while some of the party, with their watches in their hands, observed the effects. At the expiration of fourteen seconds the dog fell off his legs without moving or looking round, and continued alive only eighteen minutes. The other dog now left the party and went to his companion; on reaching him he was observed to stand quite motionless, and at the end of ten seconds fell down; he never moved his limbs after, and lived only seven minutes. A fowl was now thrown in, which died in a minute and a half, and another which was thrown after it died in the space of a minute and a half. A heavy shower of rain fell during the time that these experiments were going forward, which, from the interesting nature of the experiments, was quite disregarded. On the opposite side of the valley to that which was visited, lay a human skeleton, the head resting on the right arm. The effects of the weather had bleached the bones as white as ivory. Two hours were passed in this valley of death, and the party had some difficulty in getting out of it, owing to the rain that had fallen. The human skeletons are supposed to be those of rebels, who have been pursued from the main road, and taken refuge in the valley without a knowledge of the danger to which they were thus exposing themselves.--(The effects, as here described, are identical with those at the Grotto del Cane, at Naples, and no doubt arise from the same cause. These seem more strange in an open valley; but the mephitic air at the Grotto is so heavy that you may stand upright without inconvenience, as it rises but a few inches above the surface.)--_Morning Chronicle_. * * * * * CHOLERA.--VAPOUR BATH. (_To the Editor_.) As you know that a variety of remedies are put forth for the Cholera Morbus, and as the external application of heat, either by friction, or water or vapour baths, is among the most effectual means of arresting the fatal termination of that dreadful malady, perhaps the following description of a vapour bath may claim a place in the _Mirror_:-- It is not generally known in England, that the settlers in the remote parts of North America make use of the following simple mode of procuring a vapour bath.