Review of reviews and world's work . can imagine a per-son extremely sensitive to seasickness affectedby this motion in a long flight. We may haveair-sickness just as to-day we have seasick-ness. The undulating motion of the aero-plane and the pitch and roll of a ship at seaare not dissimilar. There is endless variety in an aeroplanejourney. The aviator learns to make an en-tirely new set of observations. Much de-pends upon the air currents, and the aviatormust learn to read the signs of the sky. Hemust anticipate the approach of an air cur-rent by observing its eftect on the tops of dis-tant


Review of reviews and world's work . can imagine a per-son extremely sensitive to seasickness affectedby this motion in a long flight. We may haveair-sickness just as to-day we have seasick-ness. The undulating motion of the aero-plane and the pitch and roll of a ship at seaare not dissimilar. There is endless variety in an aeroplanejourney. The aviator learns to make an en-tirely new set of observations. Much de-pends upon the air currents, and the aviatormust learn to read the signs of the sky. Hemust anticipate the approach of an air cur-rent by observing its eftect on the tops of dis-tant trees or the surface of bodies of direction of any floating smoke on thehorizon or fog or mist gives the pilot the di-rection and force of the wind. Aviators are already divided as to the com-parative merits of aeroplane and balloonflights. What endless discussions are notforeshadowed ? 1 he preference for one formof aviation over another is largely a matterof temperament. Lieutenant Lahm, himself HO^ Ir HtiELS 10 hLY. 579. PEMBERTON, OHIO. AS SEEN FROM THE UPPER AIR. an experienced balloonist, is loud in praiseof the aeroplane. For the first time in my flights, he said,* I had the impression that I was actuallycovering ground. From a balloon the earthseems to drop away. You seem to be stand-ing still while the cities pull themselves to-gether and disappear. The aeroplane, sinceits flight parallels the ground, gives one anentirely different sensation. There is an ex-hilarating sense of progress. Then, again, aballoon trip is made in silence, while froman aeroplane you are constantly in touch withthe earth. CLAIMED FOR THE DIRIGIBLE. The balloon has an enthusiastic championin Mr. A. Leo Stevens, whose conclusionsare drawn from very wide experience. has made more than 1700 gas flights,and has taken aloft ten times as many passen-gers as any other sky-pilot, licensed or other-wise. There is a se«e of freedom a-d of quietprogress about a dirigible


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