The next curious mistake I may notice, was made by Mr. de Crespigny; he ascended the river Limbang as far as the river Damit. I have seen a sketch map of his, and he places the mouth of that stream in north latitude, 3° 48’, and the mountain of Molu to the north-east of it, in latitude 4° 3’, whereas Molu Peak is a little to the westward of south from the Damit, and nearly twenty-five miles distant in a direct line. In drawing attention to these errors, I by no means claim immunity from them in the map of the Limbang and Baram rivers which accompanies this volume; but I think they will be found free from gross errors. The course of the latter river was taken down by Captain Brett of the _Pluto_, and observations of the latitude and longitude of the town of Lañgusan were made by many of the officers on board. In my land journeys, I had very inferior compasses, as I was unable to take with me the valuable levels and other instruments obligingly lent me by Dr. Coulthard, on account of their weight and size; but I used them as long as I was in my boats, to lay down the position of the mountains; and in order to enable me to correct my own errors, I put down the day’s observations on a rough map every evening during the journey, except after we had shot the cascade and wetted the paper too much to permit it being handled roughly. I may add, that of the whole party of nineteen, none after our return suffered severely from the exposure and privations we had undergone, and I believe the real reason was, that we always were dry at night. For many years we trusted during our expeditions to the leaf huts the natives are accustomed to construct for us and for themselves; but although with sufficient time, and when good materials are plentiful, they manage to make them tolerably watertight, yet they are never so good as the simple tents we always took with us during our later expeditions. With proper ropes and everything fitted to enable us to raise these tents on cross poles in ten minutes, the two did not weigh more than twenty pounds, and afforded comfortable accommodation for our whole party of nineteen people, with all our baggage, and on occasions our six guides took advantage of them also.