Mr. Hartop presented a specimen of Titanium, which he said had first been discovered in the bottom of the Welsh iron works six or eight years ago, since which period more attention had been paid to it, and it had been found in many instances. The subject required a more thorough elucidation than he was able to bring to bear upon it; and he could only add, that the crystals of Titanium found in the works he alluded to, appeared to him to be produced to a greater extent in those furnaces into which large quantities of cold water had been introduced, while the materials in the hearth were very hot, for the purpose of more expeditiously cooling them: this was, however, contrary to the opinion of many scientific men, who thought they were formed by very slow cooling. The experiments which he had made, rather led him to suppose that this crystalization was caused by rapid cooling. The large specimen he now presented, which was a very rare one, only exhibited the cubes of Titanium, and the crystals of iron in contact with that metal were in beautiful parallelism, and much resembled those of moss. He might remark that he had never found such crystals except in contact with Titanium. The Chairman supposed that, with regard to the hearth, Mr. Hartop meant that part which was outside the furnace? Mr. Hartop replied, it was that part into which the iron fell, after being smelted from the ore, before it ...