"
Their eyes were more accustomed to the work now, and they wasted very
little time. This time, just as Harry had guessed, the flashes were being
sent due east, and judging from the first case that the next station would
be less than ten miles away, he decided to ride straight on for about that
distance. He had a road map, and found that they could follow a straight
line, except for one break. They did not go near the hilltop at all.
"I'd like to know what they're doing there," said Dick.
"So would I, but it's open country, and they're probably keeping a close
lookout. They're really safer doing that in the open than on the roof of a
house, out here in the country."
"Because they can hide the heliograph? It's portable, isn't it?"
"Yes. They could stow it away in a minute, if they were alarmed. I fancy
we'll find them using hilltops now as much as they can."
"Harry, I've just thought of something. If they've planned so carefully as
this, wouldn't they be likely to have country places, where they'd be less
likely to be disturbed?"
"Yes, they would. You're right, Dick. Especially as we get further and
further away from London. I suppose there must be plenty of places a German
could buy or lease."
"And perhaps people wouldn't even know they were Germans, if they spoke
good English, and didn't have an accent.
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