TAM O' THE SCOOTS
pushing a straight course and knew exactly where he was by a glance at his barometer. At six thousand feet he was behind the British lines at the Bois de Colbert, at seven thousand feet he should be over Nivelle-Ancre and should turn so that he reached his proper altitude at a point one mile behind the fire trenches and somewhere in the region of the Bois de Colbert again.
The aeronometer marked twelve thousand feet when he leveled the machine and began to take an interest in military affairs. The sky was clear of machines, with the exception of honest British spotters lumbering along like farm laborers to their monotonous toil. A gentlemanly fighting machine was doing "stunts" over by Serray and there was no sign of an enemy. Tarn looked down. He saw a world of tiny squares intersected by thin white lines. These were main roads. He saw little dewdrops of water occurring at irregular intervals. They were really respectable-sized lakes.
Beneath him were two irregular scratches
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