“6. The same difficulty as to name, applies to the river about twenty-five miles south of the last-mentioned?
“7. Does any river, called Wád Dar’ah, fall into the sea? according to our maps it loses itself in the interior.
“8. The town of Wad Nún will probably be found at about forty miles from the sea; should you ascend to it in your boats, pay great attention to the windings of the river, its breadth, height of banks, rate of current, and depth of water, especially on the bar.
“9. Determine, if possible, the lat. and long. of the place, its height above the sea; describe its position, estimate its population, &c.
“10. Does it stand on the banks of a river?—if so, what is its name—where does it flow from—is it said to be dry in the summer season—and is it at other times navigable for boats?
“11. Take the bearings, and estimate the distance of all mountain-peaks in sight from the town; and give the general direction of the range, or ranges, of Atlas seen from it.
“12. Ascertain how many days’ journey from Wad Nún (town) to Akkah, to Sók-Assah, to Talent, and to ’Agadír; and, if possible, obtain itineraries from natives.
“13. In sailing down the coast, note all the snowy peaks seen of the Atlas range, which must be in sight from Cape Cantín southward, and give their bearings. As from the latter Cape, till you reach the parallel of Mogadór, there is no object in keeping close in shore, it would be better to run down at such an offing as will enable you to see the distant peaks, which otherwise the high land of the coast may conceal.
“14. From a little experience among the Moors, I may venture to suggest that firmness, united with conciliatory manners, will soon make them your friends. A very trifling present of gunpowder, snuff or tea, but especially of the former, will obtain you all you want. It must be given with judgment, not too lavishly, nor before many persons. With respect to astronomical observations, if you persuade them that you are only regulating your watch, and at the same time offer to correct theirs, they will not interrupt you. Whether their watches keep time or not, is of no importance.
“15. By all means take with you a chronometer, an artificial horizon, a sextant or circle, a prismatic compass for taking bearings, and a mountain barometer, and direct that a register of the barometer, left on board, be kept while you are up the country.