There is a good deal of land in this country of such a quality that the expenses of its cultivation, together with the outgoings of poor rates, tithes and taxes, will not allow the farmer to pay more than a fifth or sixth of the value of the whole produce in the shape of rent.
"Observations on the Effects of the Corn Laws, and of a Rise or Fall in the Price of Corn on the Agriculture and General Wealth of the Country"
Thomas Malthus
According to the calculations of Davenant and King, the gross produce of agriculture amounted, at the time of the Revolution, to four rents, or, allowing for tithes, to three rents; but this was only on the arable.
"Contemporary Socialism"
John Rae
As the Levites who were not priests had no share in the sacrifices, the law provided that the tithe should go to them, but the Levites were in turn to restore a tenth part of these tithes to the priests.
"The History of Antiquity, Vol. II (of VI)"
Max Duncker