Not found in common books of liturgy, I reproduce it here with thanks to the peerless Neal Stephenson who puts the prayer into the mouth of Samuel Pepys. (Lithotomy is of course the removal of a gallstone.)
‘Lord of the Universe, Your humble servants Samuel Pepys and Daniel Waterhouse pray that you shall bless and keep the soul of the late Bishop of Chester, John Wilkins, who, wanting no further purification in the Kidney of the World, went to your keeping twenty years since. And we give praise and thanks to You for having given us the rational faculties by which the procedure of lithotomy was invented, enabling us, who are further from perfection, to endure longer in this world, urinating freely as the occasion warrants. Let our urine-streams, gleaming and scintillating in the sun’s radiance as they pursue their parabolic trajectories earthward, be as an outward and visible sign of Your Grace, even as the knobbly stones hidden in our coat pockets remind us that we are all earth, and we are all sinners. Do you have anything to add, Mr Waterhouse?’
‘Only, Amen!’ (p 500)
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