Plains on the 26th of April, 1815, and arrived on the 4th of May at a small encampment (the site of which had been previously selected), on Bathurst Plains, near the termination of Mr. Evans’s journey.  Governor Macquarie having been pleased to publish for the information of the colonists such observations on the country as he deemed necessary, I shall not presume to add any thing to an account, which so clearly and accurately describes all that could be interesting or beneficial to the colonist and general inquirer.

I have therefore inserted in the Appendix the account published by the Governor in the Sydney Gazette, of the 10th of June, 1815, as affording the best and most authentic information on the subject.  During the Governor’s stay at Bathurst, he despatched Mr. Evans, and a party with a month’s provisions, to explore the country to the south-west, and it is the result of that journey which led to the expedition, the direction of which was entrusted to my command.

The means which his excellency placed at my disposal were well calculated to attain the object in view, and it is a matter of the most sincere regret, that the nature and description of the country which we passed through was for the most part such as to afford few interesting objects of research or remark.

The botanical productions of the country have however in a great measure been ascertained by Mr. Allan Cunningham, the King’s botanist, who accompanied the expedition.

With respect to the construction of the chart prefixed to this Journal, it is thought proper to observe, that the situation of the principal stations of Bathurst, and the depot on the Lachlan River, were ascertained by celestial observations, and connected by a series of triangles, commencing at the latter point, and closing at Bathurst.  New base lines were frequently measured, and any unavoidable errors which might arise from the nature of the country were corrected at every proper opportunity by observed latitudes; so that on the return of the expedition to Bathurst, I had the satisfaction to find the connection of the angles complete, the error in the whole survey not exceeding a mile of longitude.

The instruments chiefly used were a small theodolite by Ramsden, and Kater’s pocket compass [Note:  A most valuable instrument, combining all the advantages of the circumferentor, without being so liable to be damaged and put out of order by carriage.], with the addition of an excellent sextant, pocket chronometer, and artificial horizon.  I have to lament that our mountain barometers were broken at an early stage of the expedition; the height however of some principal points had been previously obtained, and is marked on the chart; these in two instances were verified by geometrical measurement, and the difference was found to be too trilling to be noticed.  The conveyance of such delicate instruments is always attended with great risk, and in our case peculiarly so, our means