This time he found Rob more agreeable. Conditions had changed considerably since the leader had put his foot down upon any suggestion that they thrust themselves into the game. The Belgians were their friends, and they could not believe any danger was to be feared from that source.
"We might walk over that way," Rob admitted slowly; "that is, if Tubby can get over this wall."
"If not, he could wait for us here," suggested Merritt, with a chuckle.
"I see myself waiting all alone on the other side of the wall, while you two step forward and find out all there is going on. I can climb walls, all right, if somebody only gives me a little boost. Try me, and see, Rob. That's a good fellow!"
Of course Rob was ready to lend the desired assistance; and as Tubby secured a hold on a large stone that crowned the wall, he was able to hunch himself up, puffing and grunting at a great rate.
It was easy enough to get down, if one did not care how he fell; but Tubby proved fortunate in finding toe places where he could secure a hold, and in some fashion managed to "dismount."
He pattered after his two chums, who were already moving toward the middle of the big field.
Rob, always noticing things as he went along, found that the field was very level, and he could understand how the place must have been selected for a rendezvous since it offered such exceptional facilities for an aëroplane to land and start up again.
Perhaps this had been a regular nightly affair, and all sorts of valuable information may have been carried to the German Headquarters by means of this novel air route.
As the three boys gradually drew nearer the place where the lantern could still be seen, they discovered that it was now being held in the hand of some person who wore a uniform.