Numbers 17, 18, 19, 21, 22, 23, 24, 25 are all unsatisfactory as to their origin. Number 17—Lord Godolphin’s horse—is wholly unknown as to his blood elements, and further on his history will be considered. Number 18 “was brought over,” but from whence nobody knows. Number 19 is in the same condition, and not one of his different owners has been able to tell us anything about his origin. Number 21 was, possibly, an Arabian, but the Duke of Newcastle, who knew the horse well, seems to have doubted his genuineness on account of his inferiority. However this may have been, he preceded other importations so many years that it is not known that he ever sired a colt, and as a progenitor we may as well strike him out. Number 22 seems to be in darkness, and all efforts to find his origin having failed he may as well be classed as unknown. Number 23 is furnished with no evidence that he was entitled to be classed as an Arabian. Numbers 24 and 25 were confessedly not genuine. This reduces the analysis to its lowest form and shows that in the original foundation stock, including Mr. Darley’s horse (13), there were ten Turks and six Barbs that can be accepted with reasonable certainty. This leaves eight so-called “Arabians,” from which we must eliminate numbers 17, 21, 24, 25, leaving numbers 18, 19, 22, 23, without any evidence whatever that they were Arabians except in name. From these four rather obscure animals, therefore, according to the Rous dictum, the English race horse must have derived every drop of his blood; and yet there is not a scintilla of evidence either direct or inferential that any one of them, or the ancestors of any one of them, ever saw Arabia. From the custom of calling every horse from abroad an “Arabian,” that has prevailed in England for more than two hundred years, it is fair to conclude that there was no Arabian blood in the foundation stock. It was the blood of the Turks and the Barbs, commingled with that of the native blood that had been bred to race for centuries, that furnished the foundation of the modern English and American race horse. Blood in the race horse is an imperative necessity, but it must be blood that has been carefully selected from winners, and raced for generations, or it is of no value as an element of speed. If the English race horse had been a strictly pure exotic from Arabia Deserta, as Admiral Rous maintained, he would have been of no value either as a race horse or the progenitor of race horses, without many generations of careful selection and development of speed.