seven-storeyed towers

'I may recall here that the microcosmic foundaton of the seven-storeyed towers [of Balinese cremations] is to be found the the seven vertebrae of the neck which support the head'i.e., the seat of the soul.'

'Otto Rank, Art and Artist: Creative Urge and Personality Development, 1932. The microcosmic origin of the historically quite significant number seven is revealed in a footnote.