> as lemmas

1872 R. B. Smyth Mining Statist. 83 There does not appear any very good reason why prospecting ventures should not, as a rule, be established on the tribute system.

1883 Encycl. Brit. XVI. 449/2 The third method is that which is known as the tribute system. The miner working on tribute..gives the mining company all the ore he extracts at a certain proportion of its value, after he has paid all the cost of breaking it, hoisting it to the surface, and dressing it.