(*Footnote. The Tryal Rocks obtained their name from the English ship Tryal, said to have been lost upon them in 1622 (vide Horsburg's Indian Directory volume 1 page 100). This danger having been once laid down will, perhaps, never be erased from the chart, although it is generally believed not to exist. It has been placed in various positions according to the account which the compiler gives most credence to. In Arrowsmith's large chart of the South Sea it is laid down in 20 degrees 40 minutes South and 104 1/2 degrees East.) (**Footnote. Flinders volume 2 pages 261 to 263.) 1820. November 1. The following afternoon the man at the masthead reported breakers in the West-North-West, and when I went to examine from thence I was for some time equally deceived: the helm was put up and we bore down towards them but, as we approached, they vanished and we found we had been deceived by the reflection of the sun's rays upon the water.* After being sufficiently assured of our mistake, the course was resumed. (*Footnote. The deceptious appearances that are frequently observed at sea, such as the reflection of the sun, ripplings occasioned by the meeting of two opposite currents, whales asleep upon the surface of the water, shoals of fish, fog-banks, and the extraordinary effect of mirage, than which, as an optical illusion, nothing is more deceiving, have doubtless given birth to many of these non-existing shoals and islands. Were charts to be published (one does exist in manuscript, in the Hydrographical Office at the Admiralty) with all the islands and dangers laid down that have been reported by good and respectable authorities, the navigator would be in a constant fever of anxiety and alarm for the safety of his vessel. The charts of the present day teem with examples of this sort and many islands and reefs are laid down which have not been seen since their first discovery, and which perhaps never existed at all, unless, like Sabrina Island, they were thrown up by a submarine volcano, and disappeared immediately afterwards.) November 2. And by the following noon we had passed the parallel of the southernmost limit assigned to these redoubtable rocks. When we were on the starboard tack two nights before, the cutter leaked so much that we were upwards of an hour pumping out the water that had collected in three hours. On the 2nd of November we crossed the Tropic of Capricorn in 100 1/2 degrees East. November 4.