Notes

FROM CARD: "AN OVAL TAPERING BLOCK OF WOOD DIVIDED LONGITUDINALLY INTO HALVES ALONG ITS MAJOR AXIS. THE HALVES ARE EXCAVATED SO THAT WHEN LASHED TOGETHER THERE IS A CONTINUOUS AIR CHAMBER FROM UPPER END TO WITHIN A QUARTER OF AN INCH OF LOWER END. THE HALVES ARE LASHED TOGETHER AT UPPER END AND AGAIN HALF WAY OF THE TOTAL LENGTH, WHEN THE SMALL OR MOUTH END IS BLOWN INTO STRONGLY THE PRESSURE CAUSES THE LOWER END TO OPEN AND VIBRATE, ALLOWING THE AIR TO ESCAPE IN PUFFS OR WAVES, CAUSING A HARSH SOUND. THE REV. F. W. GALPIN OF ENGLAND CALLS THIS KIND OF REED THE "RETREATING REED". PROF. MASON HAS GIVEN IT THE NAME "INVERTED DOUBLE REED" WHICH I PREFER. (E.H.H.)"