Here's a different version, recorded by the Irish singer Willie Brady in about 1960 or so. The reference to Harvey Duff is an old slur used against police officers, taken from an 1874 play, CON THE SHAUGHRAN by Dion Boucicault. Harvey Duff was the villain in the play, a police spy who announced himself with a memorable whistle.

ARE YOU THERE, MORIARITY?
(As sung by Willie Brady) (Moriarity is pronounced More-ee-ARE-eye-Tee.)

When first I came to Dublin Town, to good old Baile Atha Cliath,
I went direct, with head erect, for to join the D.M.G.
And me ponderous feet walk Kevin Street for I walked with alacrity,
For well I knew they could not do … without Guard Moriarity.

I'm a well known bobby of the stalwart squad / I belong to the D.M.G.
And as I pass by, the ladies cry / "Are you there, Moriarity?"

Well the sergeant looked me up and down and down and up and then,
With a friendly smile on his honest dial, he stroked his rugged chin,
And as he took the station book, "Your name, a mhic?" said he.
And out I stuck me chest like a duck, and says "I'm Moriarity."

For I'm a well known bobby of the stalwart squad / I belong to the D.M.G.
And as I pass by, the ladies cry / "Are you there, Moriarity?"

Well the childher' love to have me near and I care not a straw when they
Used to sing that stuff about Harvey Duff In their own most engaging way.
And when some wee maid from Armagh has strayed she will surely by found by me
For over she'll run, (affecting an Armagh accent) "Oh hello old son! Aren't you Moriarity?"

For I'm a well known bobby of the stalwart squad / I belong to the D.M.G.
And as I pass by, the ladies cry / Are you there, Moriarity?

When me work is done and me course is run and I've walked on me last long beat
Up to heaven's shore I will quickly soar, and St. Peter up there I'll meet.
And I hope he'll say in a kindly way "Is it you Timothy, I see?
Your reward you've won for work well done. Flap your wings, Moriarity."

For I'm a well known bobby of the stalwart squad / I belong to the D.M.G.
And as I pass by, the ladies cry / Are you there, Moriarity?