"Sunday, September 12th. At quarter-past 5 P.M. tacked and stood on ahead of the Investigator until we were close to a very extensive sheet of mud lying all the way from the mainland. At this place an inlet of shoal water appeared to run a good distance into the country. At sundown tacked in company with the Investigator and stood off. At 8 A.M. tacked and stood into an inlet with several dry lands appearing in it, found a good strong flood against us. At half-past 9 A.M. came to.* (* "At 9 A.M. passed a fifth opening: anchored abreast of a hilly projection which I have named Upper Head." Flinders.) Lowered our boat and I went on shore with a couple of hands. Saw or found nothing worth notice--the soil is sandy, the shores lined with mangrove trees and inland a little distance we found gum trees and the palm; a few curlews and redbills were shot. "Monday, September 13th. At half-past 8 weighed as per signal in company with the Commodore; found when near the Investigator the water suddenly to shoal from 6 to 3 to 1, where we touched the ground, however on heaving up our keel she went off into 2 fathoms, when we came to, observed the Investigator to ground, she was caught on a bank of quicksand in 11 feet at half-past 10 A.M. she floated, a little after Captain Flinders went away inshore, sounding. Several native fires in sight in different directions. "Tuesday, September 14th. At half-past 1 P.M. made sail in company with the Investigator and worked to north-west where we anchored. On passing her Captain Flinders hailed us and told me to be ready at 8 o'clock in the morning to proceed to the south-east up the arm on Broad Sound. At 8 A.M. Captain Flinders and Mr. Brown on board. At half-past 8 A.M. weighed and made sail, at 40 minutes past 10 A.M. grounded in 8 feet of water, at 40 minutes past 11 A.M. weighed and made sail across the entrance of the river. From noon until 40 minutes past 1 P.M. stretching across the flats of this arm, sounding from 9 feet to 3 1/4 fathoms, where we anchored. Immediately moored with the kedge which in a little time she brought home, moored with the bowers per cable one way and 25 fathoms the other, found the tide of ebb to run at 4 P.M. 5 knots and 6 fathoms. At 5 P.M. we began to touch the ground and perceived that our main keel was gone, part of it coming up alongside. Sent some of the people out to look in what situation our anchor lay and it was found that the best bower had come home and the small parted 12 fathoms from the ring. I conclude the ragged part of the main keel must have done it when she swung in ground, we tried in vain with 10 or 11 hands to lift it out of its bed. As the whole of this part of the flats are quicksands with a strong suction, bent a good warp to its crown to weigh it by when the tide rose. At half-past 1 A.M. the flood came to us with much noise and about a foot high, in 15 minutes we floated and hove up to our best bower. By 5 A.M. began again to ground, by 6 A.M.