Good Mistress Sundial

"Good Mistress Sundial, what's the hour?"
"Alack! to tell you I haven't power.
It rains; and I only can work, you see,
When the sun is casting his light upon me.
I'm nothing at all but a senseless block
Whenever his beautiful rays depart;
But ask my neighbor, the Four-o'clock;
She carries the time o' day in her heart."