E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Hair devoted to Proserpine.
Till a lock of hàir is devoted to Proserpine, she refuses to release the soul from the dying body. When Dido mounted the funeral pile, she lingered in suffering till Juno sent Iris to cut off a lock of her hair. Thantos did the same for Alcestis, when she gave her life for her husband. And in all sacrifices a forelock was first cut off from the head of the victim as an offering to the black queen.