L. 25, P. 19. Another specimen of Macropus oriomo just brought in; this time a female. Very pleased to get these animals. A very large male Macropus agilis represents that species too. So with only four days collecting I have no less than nine species of mammals to show; we have, I think from twelve to fifteen species of birds. Some measurements of the above two species are as follows: Tibia 260 mm. 135 mm. Femur 230 115 ulna 165 87 Humerus 145 78 Epipubics 70 57 The last mammal to be taken by us out of Buji was an adult Isodon which at some time during its life had lost its tail. It had two young in the pouch which were about half grown. Got most everything packed up and ready for a start around moon-rise. Tues. Jan. 5. Made a beginning of getting away at two a.m. I had a cup of coffee and a bite of kai while the boys were loading the gar onto the which I found upon trial to be nearly half a mile out through shallow, knee-deep water and ankle-deep mud. However we were actually under sail by three o'clock. These native sailing canoes are quite wonderful craft: With a hull made of a single huge log' hollowed out as a starter, they build up a high freeboard with heavy timbers thus add- ing at least a foot to the clearance. Then double outriggers are fitted each outrigger carefully shaped to a torpedo-like form. And finally, at least one mast (in our big canoe two) is stepped and rigged, both masts being stayed out to the ends of the outriggers. We carry three sails: jib, foresail and mainsail, and we go like the Dickens in the merest whisper of a breeze, and close into the wind too. I should have said that the outrigger crossbeams are slightly up-arched so that only one of the outriggers rides on the water at a given moment. I sat for a while on the big platform that is built on and out over the outriggers, but soon decided to have my cot opened and get some more sleep. This morning we stopped for a few minutes by a broad, shelf-like extension of the shore limestone which came out from the shore forat least half a mile and must have reached for a couple [illegible] of miles. I got hold of a couple of pieces of limestone from it: the selfsame kind of rock that we have been finding all the way out. The native captain of the canoe who has sailed all around the Straits declares that Mabaduane, Dauan, and the rather distant Darnley Island are the only places known to him where granite occurs. The limestone shelf lies approximately [illegible] NW of Dauan Island, and E of the Boigu group of islands. 4.15 p.m. We are within a short distance now of Mabaduane. First calm, then head wind from the SE int which we had to beat delayed us. I reverse my statement made above about these canoes being good sailors into the wind, though. A series of a bout ten slight points with shallow bays between them about ten miles apart mark the south coast. Dauan has a shelf to the NW that looks suspiciously like the old limestone . Saibai is almost surely limestone. Along its northern side are about seven slight rises ending in points with very slight bays between them. Near its western there is a slight downwarp, where the village has been located. The island group Three Brothers far south (at least one of them) is also granite. The little island Sogeura is also formed of ganite. A head wind all the way and the tide later setting against us delayed our arrival at Mabaduane until about 8 p.m. And to cap things we ran aground about 300 yards out but within shouting distance. A small canoe