Ul 
CHAP. IL.] FROM PORTSMOUTH TO TENERIFFE. 159 
Admiral Beaufort’s scale. This scale ranges from 1 to 12. I 
add a table, giving what must be only regarded as rough ap- 
proximations to the somewhat indefinite values of the numbers 
—in ordinary language, in velocity, and in pressure. 
No. on A Pressure on the 
Beaufort’s Equivalent Expression. ae a eae Square Foot in 
Scale. te Pounds. 
Light Air 
Light Breeze....... 
Gentle Breeze...... 
Moderate Breeze... 
Fresh Breeze 
Strong Breeze..... 
Moderate Gale 
Fresh Gale 
Strong Gale 
Whole Gale 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
Gibraltar from the Sea. 
