utmost importance that the mitrailleuse is kept in order.
"Oil and gas!" they heard being bawled at many a mechanician by the eager pilots; the mechanics adjusting the gasolene and air throttles while the pilot gripped the propeller.
"Contact!" shrieked an attendant close to Tom, and the word was echoed by his pilot, who snapped on the switch, as the man spun the propeller. The motor took, the machine started forward out of line with the many others, raced more rapidly over the ground, and then took the air like a great bird. Jack had gone off with the Frenchman whom he was to accompany aloft.
There was no time to think of anything that had to do with sentiment. If fortune were kind the two chums expected to meet again later in the day, to compare notes as to their various experiences.
Now Tom's sergeant signaled to him to get seated, while he himself looked to the few last things that were necessary. In another three minutes he had given his mechanician the word, and Tom had followed Jack into the air.
The ascent was easily accomplished, and Tom Raymond quickly saw that there was a master hand at the wheel. The veteran pilot had been almost constantly at the work of handling a
