A proportion of the net income of each commandery fixed by the Chapter-General and liable to increase in case of need—£547,520 per annum.
2. MORTUARY AND VACANCY.
On the death of a commander all the net revenues from the day of
his death to the following May 1 went to the Treasury: this was the
MORTUARY; the whole revenue of the succeeding year was also sent to
Malta: this was called the VACANCY—£521,470 per annum.
3. PASSAGES.
These were sums paid for admission into the Order, and were especially heavy for those who wished to enter the Order at an age earlier than that laid down in the Statutes—£520,324 per annum.
4. SPOILS.
These were the effects of deceased Knights, who were only allowed to dispose of one-fifth of their property by will, the remainder going to the Treasury—£524,755.
These made up about five-sixths of the total revenue, the remainder being small sums accruing from various sources, such as the proceeds from the timber of the commanderies (which went entirely to the Council), rents from buildings in Malta, and so forth.
At the height of their prosperity the Knights derived a very considerable revenue from their galleys, and just as Algiers, Tunis, or Tripoli throve on piracy, even so the wealth of the East contributed largely to the splendour of Malta. But during the seventeenth century various Christian Powers, such as Venice or France, insisted on restricting the Knights' claims to unlimited seizure of infidel vessels and infidel property on board ship. As early as 1582 the Pope had forbidden the Order to seize in a Christian harbour Turkish ships or Turkish property on Christian ships, and, despite the strenuous opposition of the Knights, enforced his commands.
The expenditure of the Order was, on the whole, within the limits of its revenue. The chief charge upon the expenditure was the fighting forces—the fleet and the garrisons—which together absorbed about half the revenue. Of the other items, the most important were the Hospital, the Churches of the Order, and the support of its officers both at the Convent and in the various European countries. The Knights were never seriously threatened financially till the French Revolution wiped out half their revenues at one fell swoop. Emergencies were always successfully met by an appeal to the self-denial of the members of the Order and the generosity of Europe.