Chapter IV: Investigating the Upper Air 25

List of Plates

Figure
No. Page
Army airplane gliding to North Island Over U. S. Cruiser
“San Diego” _Frontispiece_

1. Congressional Medal awarded Wright brothers 33

2. Ascent of sounding balloons at Avalon 34

3. Meteorograph which made the ascent of July 27, 1913 35

4. First flight of airplane carrying two persons 36

5. Sub-station at Mount Wilson Observatory 37

6. Type of airplane used in 1911 on North Island 38

7. Discussing a flight 39

8. Captain Culver and parachute for determining wind-direction 40

9. Lieutenant Gorrell, U. S. Infantry, as observer 41

10. Point Loma from the eastern shore of North Island 42

11. San Diego, across Spanish Bight, from U. S. Aviation School,
at twilight 43

12. Instructor Brindley and Meteorologist Carpenter in
Military Tractor No. 50 44

13. Military Tractor No. 50 45

14. “Trimming” Tractor No. 50 46

15. Military Tractor No. 50 just before leaving the ground 47

16. San Diego harbor at over two thousand feet altitude 48

17. San Diego viewed from an altitude of thirty-five hundred
feet 49

18. Military Tractor No. 50 viewed from the ground 50

19. Flying Squad’s Wind Direction Pennant Tower 51

20. The Aviation School Motor-Boat “Pronto” 52

21. U. S. Aviation Field at three thousand feet altitude 53

22. Repair Shop, U. S. Aviation School, San Diego, Cal. 54

The Aviator and the Weather Bureau