“He was right,” said Fred, soberly.  “If the Germans got that book, it would be as valuable to them as a whole army, Vladimir.”

“It is very strange,” said the old man.  “I do not understand, but I am old and stupid, and it is not for me to question my betters.”

Fred sat down and studied the code for a few moments.  More than ever he was glad now that his mother had always insisted that he must be able to read and speak her Russian tongue.  He would have to send in Morse, instead of in the somewhat simpler Continental code, but that, he thought, would make little difference.  Some operator would be certain to understand his sending.

And now he sat down and began calling Suwalki.  He would have liked to call Virballen, which was nearer, but he was not sure that the Russians were still in possession of their station there, since he remembered that the Germans had had the superior force there on the Saturday night when the war broke out—­a night that seemed to lie a century in the past now!

For a long minute he hammered out his call.  And then through the air, over miles of hostile country, came a welcome whisper in his ear—­the whisper of the answering call from Suwalki!  He was in touch with Russia!

CHAPTER VIII

WITHIN THE ENEMY’S LINES

For many reasons Fred did not want to hold a long talk with the Suwalki operator.  German wireless stations were undoubtedly at work in the surrounding country, and, though there was no great danger that his messages might be intercepted and read, it was not advisable, of course, to let the Germans, who were sure to be watchful, know that there was a private Russian station somewhere within German limits.  The instruments here were tuned to a certain wave length, and he guessed that this was standard for all Russian military stations, and different from that of the Germans.  But when he held his circuit to listen he got whisperings that sounded almost like static electricity.  It was evident that a good many stations were sending, and that the air all about was full of the waves.

So he contented himself with a brief and direct report of what had happened, explaining why Boris was not himself present to make this report.  He asked for information as to the movements of the Russian army, but got no satisfaction.

“We don’t know ourselves,” said the Suwalki operator.  “Things are moving very fast, but absolutely no news is being given out.  I know that our cavalry—­Cossacks, chiefly—­have crossed the border at half a dozen different points.  The Germans and the Austrians have invaded Poland, and our troops have all been withdrawn from that region.  The concentration there is going on at Brest-Litovsky, and behind the line of Warsaw-Novo Georgevsk.  But here there are a good many troops.  There may be Cossacks within a few miles of you.  They are raiding.  Here it is said that our first move will be to try to cut the German railways.”