1G(; PERMANENT REFERENCE MARKS ON THE ISLAND OF FUNAFUTI. 



490 metres northerly from the Mission Cliiirch. They are of the same dimensions, 

 are secured in the same way, and are tilled with pure Portland cement in the same 

 manner as the pipes on the ocean beach. As shown on the plan (Plate 19), one of these 

 pipes is close to high water and the other near low water. The top of the one nearer 

 to high water is "08 foot below the mean tide level referred to above, with a limit of 

 error of plus or minus '005 foot. Diagram A (Plate 19) shows the relative positions 

 of the copper plugs and the cement-filled pipes on the ocean platform. Copper plugs 

 were not placed on the lagoon platform. 



