70 Proceedings of the Royal Society of Edinburgh. [Sess* 
C there is a diminution of pressure at all levels. The temperature is also 
decreased at all levels, the decrease being: a maximum at the region of 
origin. The density is reduced at low levels, less reduced (perhaps occa- 
Temperature 
slightly 
Increased. 
P R 
Density 
Increased. 
Entropy 
slightly 
Increased. 
Temperature 
e s s u r e I 
Density Decreased or 
slightly Increased. 
Entropy Increased. 
t 
Increased. 
N C R E A 
Density Inc 
Entropy Dec 
Unchanged. 
s E D. 
reased. 
reased. 
U 
II = a 
H =b 
ft 
Temperature 
slightly 
Decreased. 
P R 
Density 
Decreased. 
Entropy 
slightly 
Decreased. 
Temperature 
e s s u R E 
D 
Density Increased or 
slightly Decreased. 
Entropy Decreased. 
ft 
Decreased. 
E C R E A 
Density Dec 
Entropy Inc 
- t 
Unchanged. 
s E D. 
reased. 
reased. 
Fig. 6. — Well-established Anticyclone and Cyclone of fig. 2 type. 
The arrows show, not the winds, but small components of the winds. Compare fig. 8. 
Double-line arrows for dense air. 
