But in which direction was he to go? They all three scanned the trackless plain to try and discern some sign of a road. It was as white, as smooth, as virgin as if no foot of man or beast ever crossed it.
Then to Nadine's bright brain came a wise thought.
"When we left Parentes was not Mamezan in the west where the sun sets, Cæsar?"
"Yes—it was," responded Cæsar, "but there's no sun to be seen now, so we can't tell anything by that."
"True enough," returned Nadine, her pretty face bright with intelligence; "but you know that Nalla every morning turns his head to the rising sun. Last night our old friend as usual wanted to be ready to see the dawn of the day, and he turned towards the east. You should therefore go in the opposite direction in which to find Mamezan."
Cæsar's countenance lost its puzzled look, and was brightened by a smile of comprehension.
"You clever girl!" he cried. "You are right, of course, as you always are. I never saw the like of you for thinking of things. And Nalla, dear old Nalla, has come to our help again. Oh, what a treasure he is!"
With his mind thus settled Cæsar once more bade the others good-bye, and started off, trudging manfully through the deep snow which made the walking hard work for his young legs.
"Good-bye, my brother!" Nadine called after him. "A safe journey to Mamezan, and a quick return to deliver us from this dreadful place."