68 



ON THE RECLAMATION 



passage through it, and an outlet had periodically to be made by 

 manual labour, at considerable expense, to prevent flooding of 

 the land. Whereas, had the outlet been formed on a lower 

 level, and carried out to low water, it would not only have been 

 clear of the detrital matter thrown up by the sea, and forming 

 the line of beach, but would have had the advantage of the 



Fig. 12. 



greater scour due to additional head at low water to remove any 

 obstructions that might be thrown up opposite the outlet. 



In addition to what may be properly styled works of de- 

 fence against aggression, and may therefore legitimately be 

 regarded as coming within the province of ordinary agricultural 

 engineering, the section of the subject we are now considering 



