This formula saw the light in 1891, in a paper written by him entitled "On the flow of water in open channels and pipes," published in the Transactions of the Institution of Civil Engineers (Ireland).
Diese Formel erblickte 1891 das Licht der Welt, in seiner Veröffentlichung „On the flow of water in open channels and pipe“ erschienen in den Transactions of the Institution of Civil Engineers (Irland).