Sunday, April 18 (Cont'd) case in point. On the latest map we have, a sheet of the AAF aeronautical chart published in 1945, it is shown merely as a crooked caterpillar with not a single altitude given. Although a conspicuous mass of mountains from the sea, the range is not shown at all on the marine charts. But on all maps the much smaller and lower Macrossan Range figures prominently, with altitudes no doubt copied from the marine charts based on early surveys of the coast dating perhaps as far back as Captain Cook's. From our course, about 25 miles from the McIlwraith Range, the range looks dry and the areas of rainforest which I know from air observations to exist are indis- tinguishable from cloud shadows. From the sea the range looks 2 to 3 thousand feet high on its most elevated parts. It is this elevation, and increased rainfall, which brings in the rainforest type of vegetation, in an area quite isolated from the great rainforests of the Cairns-Cooktown area. Made a panoramic series of photos of the McIlwraith Range and the Macrossan Range from a position half mile west of Hannah Island, taking in a sweep of from about 230 to 340 degrees. The Macrossan Range, running closely parallel with the sea for some 50 miles, rising in places to somewhat over 1600 ft., and breached in two places by the Nesbit River and Hayes Ck., carries much rainforest on its seaward slope. But the rainforest is generally on the middle to upper slopes and crest, the lower slopes and narrow coastal plain being occupied by savanna-forest of brownish appearance. Pale green areas show where the rainforests have been destroyed by fire, the most striking of the pale green grass areas being on spur ridges, on several of which fires have burned a narrow strip, looking like a road clearing, and reaching clearuilds the top of the range between walls of dark rainforest. With the southeast wind freshening toward evening and helping us do a good 7 knots with sails hoined to help the engine, we passed Cape Direction at 8 P.M. The sails have been rigged all day, but until near evening were of little use but to give some shade on deck. Monday, April 19 At 6:30 A.M. we were passing Sunday Island, northernmost of a group of small to largish elevated islands (of red sandstone?) off Cape Grenville. White sandills showing on the cape and northwards along the shore of Shelburne Bay. In varying dept, and perhaps an occasional break where sound country extends to the shore from inland, these dunes extend along the cost from Cape Grenville to near the mouth of the Escape River. As we neared Bird Islands, the engine carked out again - it has been doing that eyery few hours since we left Cairns. This time it was the injector system - clogged with rubbish from the fuel oil and causing the engine to overheat. The sails took us opolis to Hannibal Island where we dropped anchor at 2:30, and having several hours to spare (we must have daylight to get into RIP and cannot get there before nightfall), we all went ashore. The crew to try for fish and crayfish with spears, and to look for turtle eggs, the rest of us to explore the island and its reefs and beaches. We were on the westernmost of the two Hannibal Islands (I believe it is called Busby Id. on the chart). Both are on the edge of a somewhat circular reef, bare at low tide. Our island was raised perhaps 10 ft. above high water mark and was ofeam sand resting on a base of flat bedded sedimentary rock which outcropped exten- sively around the edges of the island. The rock apparently a fine-grained marine conglomerate of coral sand. Above the tides the island is covered with brushy forest containing large wongai trees, several Ficus spp. and a surprising assortment of