lagoon. Back to the "France." Wednesday, March 12, 1924. Ashore at 7 A.M., landing on north side of entrance. Followed up the N.W. rim, accompanied by the boat in the lagoon. A series of small brackish ponds or sink holes, some dry, some only slightly brackish, although they rise and fall with the tide. Bordered with Sesuvium. Numerous Eplydid flies about the pools and small flies, black ants, and brown and gray leafhoppers on the Sesuvium. Some on Boerhaavia with addition small cream and brown moths. Usual hippobosied flies on frigate birds. Cross-section of Island Rim (at point 1/2 mile N. Lagoon Entrance) Cross-section of Island Rim (at point 1/2 mile N. Lagoon Entrance) Ocean Reef Beach Down Vegetation Sand Sand flat Coral head Lago. Sand Broken Coral Tebbles coral or Sandstone or Sand Occasional Hollow with or without Brackish water. Vegetation consists of Plants 1 to 6 inclusive (as listed above). A small, only slightly brackish pool contained a green slime and a minute organism about 1/16 inch long. Took sample containing both. My attention was called to it by frigate birds swooping down upon it and apparently drinking. Pool about 5' dia. with a patch of Sesuvium on W. side. Roll 12:1 The pool and sesuvium patch. Some of the sand and coral fragments beginning to solidify into a con- glomerate as in the lagoon at Wake. The next entrance to the lagoon is 3/4 mile above the first (main) entrance. It is shallow but nearly 200 yards wide as shown in Roll 12:2 Second lagoon entrance taken from lagoon side looking N.W. It is much like the south entrance of Wake. Hono waded across, but we