A door behind his chair opened quietly, and there came in a small, lame girl in a grey gown.

This was 'Dolly,' then, and that was what I thought her at first, just a small lame girl in a grey gown. 'Dolly' came in slowly, and Master Caleb turned round and made her a beautiful low bow. He tried to go and meet her, but the Professor had got his hand upon his arm, and was pointing to him with the glass tube, and evidently had just come to the very pith of his discourse.

Dolly—Mistress Dorothy, as I called her later—leant over the back of her father's chair, and smiled at Master Caleb. Watching her from my dark corner, I presently saw how good she looked and how her eyes lighted up her pale face when she smiled—nice soft eyes they were; just as grey as her gown.

Professor Bruce never found out that his listener was not as attentive as before; but I saw more—his thoughts had wandered away from the wonderful saucer since the young lady came into the room.

I was getting tired of sitting so very still on the edge of the big books. I wanted to hear Mistress Dorothy speak. She saw me too, for she looked full into my corner, and then glanced at Master Caleb with another of her pleasant little smiles.

We waited until the Professor folded up the letter, and turning round in his chair so as to look up in his daughter's face, said, 'So we have got it all right at last, Dolly.'

She said heartily, 'I am so glad, father,' and then everybody moved.

The Professor pushed back his chair and stood up.

'Caleb Morton was in luck,' he said with a pleased look, 'to come in just as I was reading that letter. It makes it clear, Caleb, doesn't it.'

'Indeed it does, Professor. Mistress Dorothy,' and he went a step or two near to her and spoke low. I just caught the words, 'ventured,' 'my best boy,' and 'Wyncliffe Castle.'