fig.13. 



Diagram showing Decrease of Diamater of 

 Rotation, from the Equator lo The Poles.. 



F,g.l4. 



Fall of 1 Mile in 5 Miles. 



or a depth of 1000 Fms ._ 5 Naut. Miles from the Shore. 



Fall of 1 Mile in 10 Miles 



or a depth of 2 000 Fms._20 Naut. Miles from the Shore 



Fall of I Mile in 20 Miles 



or a depth of 3000 Fms._60 Naut. Miles from the Shore. 



