The National Geographic Magazine, Volume 104National Geographic Society, 1953 - Geography Indexes kept up to date with supplements. |
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Page 385
... CRICKETS THE. O` NE September evening in Silver Spring , Maryland , the incessant chirp , chirp , chirp , of a cricket in the house in- terrupted my reading . During the summer I had become so accustomed to these insects ' familiar calls ...
... CRICKETS THE. O` NE September evening in Silver Spring , Maryland , the incessant chirp , chirp , chirp , of a cricket in the house in- terrupted my reading . During the summer I had become so accustomed to these insects ' familiar calls ...
Page 388
... crickets make supersonic noises , sounds too high for the human ear to hear . Why Does a Cricket Sing ? Another scientist timed a snowy tree cricket at 90 chirps per minute , or 5,400 chirps per hour in a 12 - hour night . At that rate ...
... crickets make supersonic noises , sounds too high for the human ear to hear . Why Does a Cricket Sing ? Another scientist timed a snowy tree cricket at 90 chirps per minute , or 5,400 chirps per hour in a 12 - hour night . At that rate ...
Page 391
... crickets . and found they were sing- ing , respectively , C ( D on warm nights ) , E , and F , starting two octaves above middle C. Not normally house- hold residents , crickets do enter houses in late sum- mer when vegetation be- comes ...
... crickets . and found they were sing- ing , respectively , C ( D on warm nights ) , E , and F , starting two octaves above middle C. Not normally house- hold residents , crickets do enter houses in late sum- mer when vegetation be- comes ...
Contents
Fact Finding for Tomorrows Planes A Little Faninabox Wind | v |
All America Mingles in the Prairie State | xi |
The Yankee Sailor Who Opened Japan Commodore Perry and His Black | xvii |
Copyright | |
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