Cancer

"By attracting or heaving the waters of the ocean, she naturally appeared to be the sovereign of humidity; and by seeming to operate so powerfully upon the constitutions of women, she equally appeared to be the patroness and regulatress of nutrition and passive generation: whence she is said to have received her nymphs, or subordinate personifications, from the ocean; and is often represented by the symbol of the sea crab, an animal that has the property of spontaneously detaching from its own body any limb that has been hurt or mutilated, and reproducing another in its place." (The Symbolical Language of Ancient Art and Mythology.)