"Excuse me, for one minute." She read the letter, and closed it again with a sigh of relief.

"I knew it!" she said to herself.

"I have always maintained that the albuminoid substance of frog's eggs is insufficient (viewed as nourishment) to transform a tadpole into a frog--and, at last, the Professor owns that I am right.

I beg your pardon, Carmina; I am carried away by a subject that I have been working at in my stolen intervals for weeks past.

Let me give you some tea.