On the north side of Mount Irvine is a second nullah, the Eswa, which flows, like the Besaon, through the dense growth of bush covering the eastern uplands. A few minutes' walk along the right bank leads to a broadening of the bed, a swamp during the Rains and a field of cereals in the Dries. Thence we plunge into the jungle, and after a couple of hundred yards come upon signs of mining. In the Eswa bed, where the gulch is choked by two mounds or hillocks, appear the usual 'women's washings,' shallow pits like the Brazilian _catas_, whence the pay-dirt has been extracted. On the right bank, subtending the bed, their husbands have sunk the usual chimney-hole to scratch quartz from the bounding-wall of the reef. These rude beginnings of shafts reach a depth of 82 feet, and perhaps more. All are round, like the circular hut of the African savage; similarly in Australia the first pits were circular or oval. They are descended in sweep-fashion by means of foot-holes, and they are just large enough for a man to sit in and use his diminutive tool. The quartz is sent up to grass by a basket, and carried to the hut. After a preliminary roasting, the old custom of Egypt, it is broken into little bits and made over to the women, who grind it down upon the cankey-stone which serves to make the daily bread. In some parts of Africa this is men's work, and it is always done at night, with much jollity and carousing. I named this place the 'Axim Reef.' It had been taken by Dr. J. Ogilby Ross, formerly district medical officer, Axim, and now preparing to explore the regions behind the Ancobra sources. He allowed, however, his prospecting term to elapse, and thus it has been secured by Mr. Grant for Mr. J. Irvine. It taught us three valuable lessons. 1. Wherever _catas_, or 'women's washings,' are found, we can profitably apply the hydraulic system of sluicing and fluming not by an upper reservoir only, but also from below by a force-pump. Water is procurable at all seasons by means of Norton's Abyssinian tubes, [Footnote: The Egyptian campaigners seem to have thought of these valuable articles somewhat late in the day. Yet two years ago I saw one working at Alexandria.] and the brook-beds, dammed above and below, will form perennial tanks. I am surprised that English miners on the Gold Coast have not borrowed this valuable hint to wash from the people who have practised it since time immemorial. Wherever we read, as on Mr. Wyatt's map, 'Gold-dust found in all these streams;' 'Natives dive for gold in the dry,' and 'Old gold-shafts all along this track,' we should think of 'hydraulicking.' 2. The natives, here and elsewhere, prospect for and work the bank-reefs after the subtending gutter-bed has proved auriferous. There is, however, no connection between the two, and the precious metal in the subsoil is either swept down by the floods or washed out of the sides, as we shall see on the Ancobra River.