... sudden.”’ “What's so dan “Why—whry. that’s our young ster: ‘No. sir.” said cha “the airship is torkw, impracticab'e. “Do you speak as a ntigt 2° “No, oir. As a man of expemence. ippose your engine breaks or your petrol and leaves you stuck away ina cloud ...

... the details of our drawing and the following notes we are indebted to the courtesy of the Marconi Company. In the action of speaking or singing we transmit into the air sound waves. These waves vibrate upon the drum of the ear, and the vibration is carried ...