The first exhibits of ores I happened to inspect were from the Camperdown Reef, in which the virgin gold was conspicuous enough to satisfy the most unbelieving. The next exhibit consisted of a number of briquettes of cement manufactured in Bulawayo. The third was a glass case which contained old gold beads, discovered at Zimbabwe, and attracted a great deal of attention from the dusky appearance of the metal which centuries had given it, the rude workmanship, evidently African, and the puerility of the ornaments. Beyond this the Rhodesia Ltd. Company had specimens from the Criterion Reef, situate eight miles from Bulawayo. The rock contained no visible gold, and the Curator who guided me round had the assurance to say that the quartz where gold was not visible was more appreciated than that which showed nuggets. This made me think of the mountains of white quartz I had seen on the Congo, and to wonder whether the Curator was indulging in unseemly levity. However, perceiving some doubt in my glance, he said it would be demonstrated shortly. Adjoining the Criterion ores was a heap from the Nellie Reef in the Insiza district, fifty miles from Bulawayo. The Curator said these were "very rich," and taken from old workings; but despite the Curator and the old workings, I could not see a trace of gold in the rock, even with a magnifier. Next to the Nellie exhibit was a pile of rock from the Unit and Unicorn Reef--in the Selukwe district, Eastern Rhodesia--but I saw no gold in any one of these rocks. A Successful Crushing of Gold Quartz. Just at this juncture the Curator told me that one of these apparently valueless rocks was about to be crushed and panned for our instruction. We went out into a yard, where there was quite a crowd of curious people assembled. The lump of rock was put into a small iron mortar, and in a few minutes it was pounded into a dusty looking mass. It was then passed through a fine sieve and the larger fragments were returned into the mortar to be again pounded. A sufficient quantity of the greyish dust having been obtained, the mortar was emptied into a broad iron pan. The pan was dipped into a tub full of muddied water, a dexterous turn or twist of the wrist, and the coarser material was emptied into the tub. Frequent dippings and twists reduced the quantity of material in the pan, until at last there was barely a tablespoonful of it left, and still I saw no glitter. Again the dipping and twisting and rinsing were repeated, until at last there was only a teaspoonful of the dirt left; but all around the bottom of the pan was a thin thread of unmistakable gold dust. It was beyond belief that such a barren-looking piece of quartzose rock should contain gold; but then these experts are wonderful fellows. I pay them my most respectful homage. How the Ancient Miners Worked.