Kesteven presented George with two bats in pickle (one a topotype of a very rare Scoteinus. We have undertaken to send him, if possible, crocodile and green turtle material for his work in comparative embryology. Inspected the 70 ft. trochus-shelling vessel of Rossow and his fat lazy son, and saw a collection of shells they are getting together from the Barrier Reef waters. Sixteen Lockhart River boys employed on the boat. They use dinghies from which they dive for the trochus, bare-skinned, in 4 to 5 fathoms of water. Boys said to be excellent divers and easy to manage. Shell 2½ to 5 inches diameter is taken and sorted into 3 grades by size and quality. Best grade, 2½ to 3½ inch diameter, now bringing 72/- per ton. Business highly profitable. Sat., April 17 At dawn we were coming up on Cape Flattery (apparently red sandstone, much contorted (photos)), and at 9 o'clock we were off Point Lookout, another bold cape of reddish sedimentary rock jutting out from an extensive area of sand dunes extend- ning from south of Cape Bedford (ca. 15° 20'S) to about 14° 48' S. The sand color of the dunes, shown in numerous blow-outs in a generally vegetated surface, is white. The dunes carry low scrubby forest and apparently also shrubby growths. Had some in- formation on the dune area from the missionary Swartz on my February visit to Cook- town. He advised the McIver River is the best place for a camp to work the dunes. Good water in a lagoon near an old coconut plantation planted by the Mission. Ap- proach by sea. Road from Cooktown no longer passable (?). At 4:30 P.M. dropped anchor off the west side of Switzer Reef, close beside the stranded "Darwin". We had carried a large dinghy from Cooktown for use in the salvage operations. The Darwin lying high on the rough coral rock surface of the reef, with barely a foot of water around her at low tide. She had been stripped of everything moveable. The skipper having some work to do on the engine of the Lochiel, changing oil strainers, the four of us went ashore to explore the reef. The tide, then beginning to make, covered the reef to a depth of about a foot, except for one slightly higher spot of small area where various seabirds were resting. Switzer is a dead reef, its original surface covered with coral debris and ooze, and supporting a scattering of juvenile giant clams up to nine inches in diameter, a few living brain corals of brownish color, a few drab brownish anemones, bright blue starfish, occasional black sea slugs, etc., more or less hidden by a slimy, pale √green alga rooting on the bottom and spreading over the surface of the water at low water. The Tates and Van picked up various trophies and we all made photos. The Darnley, with the salvage party on board, arrived and anchored beside us about dark and Smith came on board to see us. Up anchor and away about 7 o'clock. Sunday, April 18 Kept going all night but for a brief stoppage to fix a water pump and at sunrise the Flinders Group of islands was well astern and heights of the Main Dividing Range showed far to the west across Princess Charlotte Bay. Farther north on the mainland the pale blue bulk of the McIlwraith Range was topped with white cloud which soon melted away when the sun gained strength. This slow voyage up the coast gives one a good idea of the great size of the Cape York Peninsula. It also brings to one's attention the great amount of work which remains to be done in mapping parts of the area. The McIlwraith Range is a