Show WW How Dizzy You Get When Spun Around in a Chair Proves Your Fitness for Flying FLin I TUg physical al examination of candiA candidates candidates candi candi- A dates for the aviation branch o 0 othe the army is more rigid than that for other branches the most im- im tA y 1 I I I I ii m in rae ire Barony chair l tests a man has hu to pus pass i 1 u that of his bis sense of equilibrium How N this is done is described b by Dr Charles Charlea P. P Small of or Chicago in the Journal of the American Medical Association The candidate is sealed in a Darany chair so chair called so-called after aHer the discoverer of th tha organs of equilibration This is a swing sTring chair w with ith foot rest a long Ions handle with which in can be bi whirled around and a catch by which it can be stopped at once with the examiners examiner's foot The mans man's eyes are closed and his head is tilted at about 30 degrees The chair is then rotated to the right ten revolutions revo revo- lutio s in twenty seconds and nd nd suddenly stopped The applicant applicant applicant cant is told to open his eyes and look straight in Ia front of him at some distant object If he be bl normal his eyes will make jerky movements to tn the left for tor about twenty five seconds The test Lest is repeated with with the the te chair whirling to to- to the left lett I which will produce jerks eye-jerks to the right The Tho examiner stands Lafront la 11 lafront front of Gf the still sUll blindfolded candidate tells him to ex cx- tend lund his hie ri right bt arm ann directly in front of him and with wilh his forefinger 1 touch the tip of the examiners Then Le he is told Ho raise his arm above hi his 3 head and bring it down to exactly th tho thY same ame spot This is repeated with th thi the left arm aria The chair is swung around around ten Len times in ten seconds and the in in- slant it stops stopa the examiner touches the candidates candidate's forefinger as before and tells him hint to repeat the raising raisin ani j lowering of the band hand 1 If be he be normal norma be Le will not touch the finger but wilt will i 1 past point several inches to th the tha i i 1 right of it The test is repeated repented to the left and Wie normal man pas points to the left These experiments test the norma it ity of the horizontal canals That fo to fo the perpendicular canal follows Th- Th candidate bends forward at an ang angle I of 90 degrees eyes still blindfolded 1 ins his head resting on his fists held on ovi I his bis knees The chair is rotated d to the I right ten times in ten seconds The I Instant Instant it is stopped the man is told to 10 sit upright If normal he will wili fall fali toward the right The test is then I made b by swinging to the left tell when h hp l' will vill fall to the left I I This method of t tasting the sense o n- n equilibrium ha superseded all others because it i is the most roost exact |