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(1) These hillocks are chiefly on the Windward shore: there was one which Mr Sulivan measured estimates at 24 ft. & another even considerably higher: even 35 ft !

The North point of Horsburg; a sandy beach with shoal water extending a long way out. quite exception to general structure of reef produced by set of tides

figure of the Lagoon. quite irregular.

In general discussion: paucity of plants a difficulty in the depression theory. – Mem. Lesson¹

The structure of these reefs. strictly agree with Flinders.

Barrier: in the Pacifick. from different tides. perhaps not. Breccia in Beechey.2 There is nothing distinct about

Brecciea: but simply. about. the Coral itself being petrified.

NB. The reef ought to be described first & then the structure of Islands: Islands far back on the reef

Mr Sulivan says there is a larger proportion of sand than Coral in the lagoon: describe species

Certainly taking the whole Isd. together the Breccia. is wearing away. in a large proportion: I have been inclined to think. that all the elements of the reef. were crawling outwards. but in some places it would certainly appear (as in Breccia on West Isd & block on windward. sand-dune ) that it was deposited when the sea broke much nearer: — Perhaps the Island ought to be considered as at rest after changes. consequent on some change of level. = It is scarcely possible to follow out all the consequences on slow or sudden depressions: & outward growth, too many uncertain elements. —

The Breccia. (chiefly from Sulivan, certainly does in places slope gradually to seaward. in a few spots. on to the Flat

When land & water are opposed. such equal & antagonist powers. a depression of an inch or two would turn the Balance of degradation. The depression must have been triflings. from fields of dead coral

¹ Duperrey1826-30. JvW

² Beechey 1831. JvW

Note that this page has been torn and used to be (from the remaining fold) in the position of an even numbered page.

even 35 ft !] pencil.

produced by set of tides] pencil.

Mem. Lesson] pencil.

: Islands far back on the reef] pencil.

46v

This may be considered as a very perfect lagoon Isd. — long quiescent. shallow lagoon & much proportional land: figure open to leeward. – Above half the lagoon near dry at spring tides low water

Where there are layers of solid stone on agglutinated sand. F. W. where loose stones. salt water. — Liesk

Temperature at 770 Fathoms. 45°. — surface 78°. —

at Diego Garcia (where in Indian ocean?  ) in 1812 severe Earthquake. which rent a Islet. — Capt. Ross1

Capt Ross suggests heaping up of fragments by an oblique swell. to the usual direction of gales. —

The action of worms & shells in eaten coral. added to the Fish in formation of sand: but sand probably carried in, in gales. through the openings. — NB. on outside all [injurious] sand. removed. in lagoon accumulated.

N: Keeling Isd. has same identical structure of reef. Liesk.

¹ John Clunies Ross (1796-1854), Scottish sea captain who settled Keeling. See Armstrong 1991. JvW

Above half the lagoon near dry at spring tides low water] pencil.