The great English scientist and benefactor of the race, Sir Francis Galton, in his work entitled "Hereditary Genius" made a computation of the number of men of eminence in the British Isles. This estimate was made nearly a half-century ago and has generally been accepted as representing actual conditions. One means of discovering the number was by taking a catalogue of "Men of The Times" which contained about 2,500 names, one half of which were Americans and Europeans. He found that most of the men were past fifty years of age. Relative to this he states: 'It appears that in the cases of high (but by no means in that of the highest) merit, a man must outlive the age of fifty to be sure of being widely appreciated. It takes time for an able man, born in the humbler ranks of life, to emerge from them and to take his natural position.'[1] [1] Cattell's investigations of American men of science disproves this statement for Americans. He finds that only a few men enter the ranks of that class of men after the age of fifty, and that none of that age reach the highest place. The fecund age is from 35 to 45; ("American Men of Science," p. 575.) After eliminating the non-British individuals he compared the number of celebrities above fifty with males of the same age for the whole British population. He found about 850 who were above fifty. Of this age there were about 2,000,000 males in the British Isles. Hence the meritorious were as 425 to 1,000,000, and the more select were as 250 to 1,000,000. He stated what he considered the qualifications of the more select as follows: 'The qualifications for belonging to what I call the more select part are, in my mind, that a man should have distinguished himself pretty frequently either by purely original work, or as a leader of opinion. I wholly exclude notoriety obtained by a single act. This is a fairly well defined line, because there is not room for many men to become eminent.' Mr. Galton made another estimate by studying an obituary list published in The Times in 1868. This contained 50 men of the select class. He considered it broader than his former estimate because it excluded men dying before they attained their broadest reputation, and more rigorous because it excluded old men who had previously attained a reputation which they were not able to sustain. He consequently lowered the age to 45. In Great Britain there were 210,000 males who died yearly of that age. This gave a result of 50 men of exceptional merit to 210,000 of the population, or 238 to the million. His third estimate was made by the study of obituaries of many years back. This led to similar conclusions, namely, that about 250 to the million is an ample estimate of the number of eminent men. He says: 'When I speak of an eminent man, I mean one who has achieved a position that is attained by only 250 persons in each million of men, or by one person in each 4,000.'