When Chang Yen Mow, the new head of the new Department of Mines of the new Chinese Government, began to look about for the foreigner who should know much about mines and be honest, and who would therefore be a fit man to occupy the new post of Director-General of Mines, he bethought himself of an English group of mining men with whom he had once had some business relations. The principal expert advisor of this group had been the man who was now the head of the great London mining firm for which Herbert Hoover was working, and working very successfully, in West Australia. Chang applied to this group for a recommendation of a suitable man for him. And this group in turn applied to the head of Hoover's firm. Or, perhaps, Chang applied directly to the great London mining man. The exact procedure, which is not very important, anyway, by which the head of Hoover's firm came to have the opportunity of making the recommendation, is a little obscure today. The important points in the whole matter, however, which are not at all uncertain, are that he did have it, and that he recommended Herbert Hoover, and that Chang Yen Mow, acting on the recommendation, offered the place, through him, to the youthful Quaker engineer, and, finally, that the competent and confident boy of twenty-four, always ready for the newer, bigger thing, promptly accepted it. In two weeks after the cable offer and answer, a feverish fortnight devoted to a rapid clearing up of things in Australia, Hoover was on his way to London, to report personally to his employers about their own affairs as well as to get some information about the new undertaking. He wanted to find out before he got to China, if he could, something of what would be expected of a Director-General of Mines of the Chinese Empire. Perhaps he had in mind the possible necessity of "getting up" a little special knowledge about Chinese mines and mining ways before he tackled his new job, just as he had got up enough physiology in thirty-six hours to help get him into Stanford University, and enough typewriting in a week-end to fit him for entrance into Louis Janin's office in San Francisco.