Numerous drawings of small nude women in interconnected tubs or "vats" of liquid. Cosmological: Complex, often fold-out, circular diagrams.
Some researchers suggest the plants and bathing scenes are actually stylized diagrams for medical procedures, alchemy, or even early biological observations hidden from the Church. Voynich Manuscript
Some believe it's a phonetic representation of an extinct dialect or a precursor to a modern language, like proto-Romance or an encoded form of Hebrew. Numerous drawings of small nude women in interconnected
Drawings of plants, though most cannot be identified as known species. Voynich Manuscript