FROM THE LAGOON AT FUNAFUTI. 167 
then a sudden drop 14 miles out to ‘5 per cent. of Foraminifera, 
followed by an oscillation along the floor of the lagoon, and in no 
wise dependent upon depth. The percentage of Foraminifera 
OIG 
Z, 
SWulite fala t 
7 Fatato |. 
SFunangongo t. 
Funamanu |. 
2H Falefatu 1. 
Avalau | _Afotutoa t. 
FunaFrutrt ATotL,—Showing the principal Islets and the positions 
whence the Lagoon samples were taken, 
here falls as low as 1 and never rises above 20. This low per- 
centage is persistent until within 1 mile of the opposite rim rear 
Fuafatu Islet, where there is a sudden rise to 90 per cent., whitch 
is further increased within 4 mile of the shore to 98 per cent. 
