This text comes from The Book of Scottish Song, edited by Alexander Whitelaw, a historical songbook transcribed on Wikisource and reproduced from the pinned revision linked below.
When the sun gaes down, when the sun gaes down,
I'll meet thee, bonnie Mary, when the sun gaes down;
I'll row my apron up, an' I'll leave the reeky town,
And meet thee by the burnie when the sun gaesdown.
By the burnie there's a bower, we will gently lean us there,
An' forget in ithers arms every earthly care,
For the chiefest o' my joys in this weary mortal roun',
Is the burnside wi' Mary when the sun gaes down.
When the sun gaes down, &c.
There the ruin'd castle tower on the distant steep appears
Like a hoary auld warrior faded with years;
An' the burnie, stealin' by wi' a fairy silver soun',
Will soothe us wi' its music when the sun gaes down.
When the sun gaes down, &c.
The burnside is sweet when the dew is on the flower,
But 'tis like a little heaven at the trystin' hour!
An' with pity I would look on the king who wears the crown,
When wi' thee by the burnie, when the sun gaes down.
When the sun gaes down, &c.
When the sun gaes down, when the sun gaes down,
I'll meet thee by the burnie, when the sun gaes down;
Come in thy petticoatic, and thy little drugget gown.
And I'll meet thee, bonnie Mary, when the sun gaes down.