Night on Bald Mountain 25 December 1858, has been interpreted as an indication of Mussorgsky's intent to write an opera on the subject of Gogol's short story "St. John's Eve" (, "Vecher nakanune Ivana Kupala", "St. John's Eve"). Gogol's tale contains the elements of witchcraft common to other stories in the "Evenings on a Farm near Dikanka" collection, but does not feature a witches' sabbath. No further plans for this project were mentioned. The theme of a witches' sabbath, the central theme in all subsequent "Night on Bald Mountain" projects, appears to have been derived from the nonextant play "The Witch" (, "Ved′ma") by
Bare-tailed woolly opossum Bare-tailed woolly opossum The bare-tailed woolly opossum ("Caluromys philander") is an opossum from South America. It was first described by Swedish zoologist Carl Linnaeus in 1758. The bare-tailed woolly opossum is characterized by a gray head, brown to gray coat, orange to gray underside and a partially naked tail. It is nocturnal (active mainly at night) and solitary; there is hardly any social interaction except between mother and juveniles and in mating pairs. The opossum constructs nests in tree cavities, and its litter size ranges from one to seven. Gestation lasts 25 days, and the juveniles exit the pouch after