But how should the gaps in the second vwerse be filled in? (From the link above given by GUESTGene):

So happy, were we for awhile
Like the love birds that dwell 'neath the flower
And the sweetness - - - - - - -
Seemed to revel the blush of the flower
But the happiness faded like rose
And before the last - - of the moon
The - - knocked at my door
Took care of my pretty quadroon