"You think that I ought to insist?" he said, at last.

"Absolutely!"

"Y-e-s! . . . I suppose I must. . . ."

"The least sign of weakness will be fatal," I continued. "Unless you're careful, she'll go on wavering—it's so difficult to get people at that age to make a move. But you can't marry a woman . . . who feels and looks thirty years older than yourself."

"N—o!"

"Then it's agreed that you give her a couple of weeks in which to make up her mind, and that we leave for Africa before the month's out in any case?"

"Yes! . . . I agree!" he answered, slowly.

After this, events moved swiftly. At my suggestion, Gran'pa devoted the whole of his energies to the courting of his beloved, while I busied myself with the final preparations for our expedition abroad.

There was a great deal to be done. I arranged with Dr. Croft to accompany us to Gaboon, obtained a couple of pilots for our aeroplanes, saw to the medical and surgical equipment, unearthed an interpreter for the natives, and then set about forming the necessary nucleus of old men for our Rejuvenation Sanatorium in the Kalahari.

This last was the most exciting task of all, for we had to keep the matter secret—I was so afraid of Government interference—and yet at the same time we had to noise our scheme abroad. The daily press was chosen as the best medium of approach, and the following advertisement was inserted in seven different papers:—