"Wonder of wonders!" cried Edwin, as he drew his friend nearer the window. "Have you taken up the study of animal magnetism, that you discover me here? True, you were always a sort of repertory for all valuable knowledge, but as I don't know a soul in this place, haven't been outside these four walls, or even written my name in the visitors' book--"

"The mystery will be solved in due time," interrupted Marquard with a grave face. "Come, let's sit down on this very thin couch and permit me to light one of my own cigars. I'm afraid I am not idealist enough, to find yours endurable. And now let's see and hear what these four years have made of you. You've not gained in flesh. Such a teacher of mathematics ought occasionally to pass beyond the rudiments of straight lines and angles. I, as you see, am approaching aldermanic proportions, and as Adeline is like-wise comfortably enlarging her natural boundaries, a consequence of our happy domestic life and the undisturbed harmony of souls--"

"Have you married her at last?"

"Not exactly according to form, but in point of fact it amounts to nearly the same thing. We've resolved never to part, unless it should seem advisable. Isn't the legitimate civil marriage merely a contract so long as the parties are suited, and doesn't Schiller say, 'beauty is freedom in necessity?' Well, that beauty exists in our alliance. We're both free but each finds it necessary to be with the other. The good creature has retired from the stage and adorns my loneliness with her housekeeping talents, besides secretly helping me in a scientific work."

"So the nightingale has also a talent for medicine?"

"Only the practical part of it. We're writing a cook book together, or rather a book on the art of eating. Brillat-Savarin is classical, it is true, but only a child of his time."

"And will yours allow you to devote yourself to such grave studies in another department? Certainly the words: 'How difficult it is even to attain the means by which we ascend to the source of things!' do not apply to you."

"Of course not; but just because, as a favorite women's doctor and happening to be first in this specialty, my time is very much occupied; I should not be able to finish the difficult task without the assistance of a co-worker so tasteful as Adeline. Well, you'll come and see us, it's high time. We'll take you into our laboratory, and you must bear witness--but first of all, what brought you here without your dear better-half?"

"Happy fellow," laughed Edwin, "who doesn't suspect what summer vacations mean to a poor pedagogue! Hitherto, I've always spent them in traveling with Leah, but this time mysterious and higher considerations forced me--"

"Must I congratulate you, my old friend? No shame-faced evasions with your physician! You'll make an excellent papa. It's a pity," he added in an undertone, "that uncle Balder is no longer here to see it."