estrangement. At any rate, some coldness existed, and it was not until just before his death that the professor wished to be reconciled. Then it was too late, as his brother and sister were both dead. But each had left a daughter, and the young ladies were studying abroad--somewhere in France or Germany, I believe, when the war broke out."

"I was greatly surprised, when the will was made public, to learn that I was to have half the professor's not inconsiderable wealth, on a certain condition."

"And what condition?" remarked Jerry, as the professor hesitated.

"That condition is as follows. I am to seek out these two nieces of my dead friend and give them each a fourth of his estate. The other half I am to have for myself if I fulfill the trust. That is, I get it if I can succeed in finding the two girls, and I need not tell you that I shall be very glad of the large sum of money--not for myself, oh, no!" said Professor Snodgrass quickly, "but that I may devote it to the furtherance of the interests of science. If I can solve the problem, and find the two girls, I shall have a large sum at my disposal, and I can then fulfill a life-long desire to undertake the study of the insects of the Amazon River. That is what I have always desired to do since I took up my studies, but I always lacked the means. Now, if I succeed in finding these two girls, I shall have wealth enough to travel in South America."

"And where are the girls?" asked Jerry.

"Somewhere in Germany or France," was the answer. "The latter country, I think. I have, among my papers, their last address. But since the war there is no telling where I may find them. I have written a number of letters, but have had no answers. Now I must go to seek them, and, at the same time, make a study of the effect of battle noises on crickets and grasshoppers. Is it any wonder that I seem puzzled? Was there ever such a hard problem for a peace-loving scientist to solve?"

"It isn't going to be easy," admitted Ned. "Then you really expect to go across?"

"Yes. And since I understand you are going, we may go together; or at least meet there, for I suppose I shall not be allowed on a transport, being a civilian."

"Hardly," assented Jerry. "But if, as you say, you have passports and credentials and letters of introduction, it may be arranged. You had better see our colonel. He seems to have taken quite a notion to you."

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