Both Uses of

recourse
in
Ulysses, by James Joyce

Mr Spencer Harty, C. E., on the instructions of the waterworks committee had prohibited the use of municipal water for purposes other than those of consumption (envisaging the possibility of recourse being had to the impotable water of the Grand and Royal canals as in 1893) particularly as the South Dublin Guardians, notwithstanding their ration of 15 gallons per day per pauper supplied through a 6 inch meter, had been convicted of a wastage of 20,000 gallons per night by a reading of their meter on the affirmation of the law agent of the corporation, Mr Ignatius Rice, solicitor, thereby acting to the detriment of another section of the public, selfsupporting taxpayers, solvent, sound.†
Chpt 17

In calculating the addenda of bills she frequently had recourse to digital aid.†
Chpt 17 *

Definitions:

(1) (recourse)
a different way to accomplish something when the preferred way doesn't work
(2) (meaning too rare to warrant focus)
meaning too rare to warrant focus:

In finance and law, recourse has more specialized meanings. When someone borrows money to purchase a home, the loan can be a nonrecourse loan or not. If the loan is nonrecourse and the borrower does not make payments, the lender can take the property, but they cannot take other money, valuables, or future wages of the borrower. Some states require that home loans be nonrecourse. In many states borrowers can purchase either kind of loan.

More generally in finance and law, recourse may refer to collecting from a second party who has guaranteed that a first party will pay something. For example, if parents guaranteed a loan made by a bank to their children, then the bank would have recourse to demand payment from the parents if the child didn't make payments.