ALẞbb.

Call sign for "D"-BBDDF-wwTTh—
ALBbb.

Group indicating that upper air current information follows.

Call sign for “B”—HDDVV.
Call sign for "“C”—HDDVV.

Forecast of conditions in country of origin.
4. Collective Station Reports, Class 3-The
individual station reports are given in sequence
in an abridged form as follows:-

Call sign of station DDFF.F2-ALBMhwwWWV.

Note 1-The general form for transmission "of special reports" and for forecasts has not yet been formulated.

Note 2-Observations from ships at sea and the transmission of such observations require special arrangements which it has not yet been found possible to formulate. Similarly for observation from aircraft and their transmission.

CODES

Code I-Present Weather-ww

Note.-00 to 49 weather without precipitation.
50 to 70 and 77 to 97 with precipitation

In Codes I and II, r= rain, d = drizzle, h = hail, s = snow, rs =
sleet, tlr=thunderstorm, e=wet air, f = fog (see Code V)

09 Overcast and 4f. 10 Overcast and 5f. 11 Overcast and 6f. 12 Overcast and 7f. 13 Overcast and 8f.

14 Haze lf.

15 Haze 2f.

16 Fog 3f.

17 Fog 4f.

18 Fog 5f.

19 Fog 6f.

20 Fog 7f.
21 Fog Sf.
22 Mist 1fe.
23 Mist 2fe.

24 Fog 3fe.
25 Fog 4fe.
26 Fog 5fe.
27 Fog 6fe.
28 Fog 7 fe.

29 Fog 8fe.

Special Phenomena w precipitation

30 e (wet air).

31 Exceptional visibility 32 Dust haze.

33 Dew.

34 Hoar frost.
35 Rime.

36 Glazed frost.

37 Glazed roads.
38 Solar halo.
39 Lunar halo.
40 Solar corona.

41 Lunar corona.

42 Aurora.

43 Squalls.

44 Gale.

45 Gloom.

46 Ugly: threatening.

47 Thunder.

48 Lightning.

49 Thunder and lightnin

Reproduction of license issued to aviators and pilots of aircraft by the British Air M lations under which the first licenses were issued are being made from time to time, a extremely restricted, the general principle of licensing air pilots has proven a helpful the issuing of pilots' certificates under the rules of the International Aeronautic Fed since 1905, has proven a helpful factor in governing aerial contests.

led in an apparent two-seater aeroplane. The type shown herewith is a Breguet aerial tourane, equipped for overnight travel with upper and lower berths.

Face p. 47