The sun in its last glow cast a warm light over his broad chest and muscular form, and invested with a golden flush, his fine aquiline features, shaded by a dark beard and flowing black hair. It was altogether a striking face; the eyes, somewhat sunken beneath the well-defined brows, were large, black, and strangely brilliant. He would have been observed and gazed at in any company, and even now, as he stood beside the oak, the boundless prairie around, and the Great God above, there was something noble in his look and bearing. It is true he wore a plaid grey frock, reaching to the knee and edged with fur, yet this unpretending garment displayed a broad chest, supported by a waist, at once slender and pliable, and revealed the iron outline of his sinewy arms. Its color, pale grey, gave a richer lustre to the sunset glow which bathed his face.....
`Rise, lady! On one condition I will peril my life to save you.'
He raised her gently from the floor. She stood there, erect as a queen upon her throne. Around her neck waved her glossy black hair. You could see her young bosom pant and writhe beneath the velvet cloak.
`One condition!' she murmured; and waited for him to speak.
He spoke it with his eyes. With his parting lips. With that sudden gaze which devoured every outline, every tint of her voluptuous form, from the head framed in the black hair, to the feet as white as marble.
She shrank back as though a bullet had pierced her brain.
`No! No! No! You cannot be so base as to think it!'
`Isabel---' the whisper, husky with passion, fell on her ear like a torrent of boiling lead. `The case is plain. I love you---have loved you for years. Be mine, and I will sacrifice my rank, my honor, to serve you!'
UPDATE: answer is in the comments.