When the place was first prospected there was little to distinguish it from the surrounding country, but in the eyes of the experts of those days the slightest difference was enough to urge them to seek, “fossick,” or prospect for diamonds, that is to say, scratch or dig up the surface, sieve and sort it, and sink small trial shafts, when if diamonds or good indications were not discovered at a moderate depth, the place was abandoned, and the prospector tried or “fossicked” elsewhere. A digger would pitch upon what appeared to him to be a likely spot, when, if after passing the red sand and the lime or calcareous tufa, he came to shale, he abandoned his “prospect” as useless; but if, on the other hand, after going below the lime he came to “yellow ground,” a substance something like greenish compact wood ashes, he would continue his work for some time, in the full expectation of being rewarded in the end by a good find. But in many cases this desired result was not attained, although the digger had every encouragement to persevere by finding garnets of various kinds, the pyrope garnet, usually called a ruby, especially giving him encouragement to proceed with his work; epidote, pisolites, talc ilmenite, called by the diggers carbon, iron pyrites, ice spar, zircon, and various other minerals; still after all his perseverance, and after finding all these indications, and sinking to a depth very often of twenty or thirty feet, not a single diamond would be found, he would abandon the place, when possibly after a time it would be tried again by other parties of diggers, but with no better result. The surface, as already stated in the description of the reef, was a red, sandy soil of an almost uniform depth of six feet, followed by a layer of calcareous tufa and one of yellow diamondiferous soil, averaging in thickness sixty-five feet. In the red sand diamonds were frequently found, especially when it was mixed with nodules of calcareous tufa which had been thrown out by the ant-bear (_Myrmecophaga jubata_) in making its enormous burrow, but the distribution of the diamonds which were picked up on the surface of a large tract of country was mostly attributed to birds. Coming next to the tufa bed proper, this was of a thickness from two to eight feet, but was not a compact homogeneous mass, but composed of honeycombed nodules and masses impacted together, which required much labor to break out. Some diggers smashed up all the nodules thus broken out with sledge hammers, or the sides of their picks, and sometimes, but very rarely, they were rewarded by finding diamonds. [Illustration: Kimberley Diamond Mine, Griqualand West:——South Africa.—1885]