E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
A huntsman who sold himself to Zamiel, the Black Huntsman. The night before the expiration of his lease of life he bargained for three years respite on condition of bringing Max into the power of the evil one. Zamiel replied, To-morrow either he or you. On the day appointed for the trial-shot, Caspar places himself in a tree. Max is told by the prince to aim at a dove. The dove flies to the tree where Caspar is concealed. Max shoots at the dove, but kills Caspar, and Zamiel comes to carry off his victim. (Webers Opera of Der Freischütz.)