while the number of miles flown in carrying mail during the first half of 1927 was practically the same as the mileage flown in the last half of the year, the compensation to the operators which is based on the poundage carried, had increased nearly 50 per cent. The Government figures show that while the average revenue per mile to operators during the first half of 1927 was 58.4 cents, it had jumped to 76.9 cents during the last half of the year.
"A third notable accomplishment of the Post Office Department in 1927 was the success of its night flying, which has led it to authorize a considerable additional mileage of night mail carrying by private operators. The overnight operations now in effect and to be put into effect as speedily as the additional air mail routes are lighted, aggregate approximately 2,800,000 miles per year. The night flying program includes the following services each night of the year:
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