Captive

For I am like a tigress caged and pent,
Whose supple body must contain its urge
For primal jungles, for the silken mate.
In calm behind the bars my days are spent:
I stretch for passers, and I act sedate.
But with the moon there rises on a surge
A love more mad than longing, violent.
I stalk my dusty cell and imprecate
Green eyes a-glitter at the moon in hate.