Fig. 6. 

 A. — Moves west from 3 A.M or 6 a.m. to 3 p.m., or from noon to 9 p.m., or midnight. 

 21 IS tS 12 9 6 3 Jfoon 21 18 IS iZ S 6 3 O 



15 IZ 



Fig. 7. 

 J. — Moves west from 6 a.m. to 6 or 9 p.m. 



9 6 5 Noon 21 IS 15 n 9 



Diagrams of Liurnal Waves arc reduced ahoid one-half. 



