This second volume, being about the size of the first, was completed and put in due form for the compositor, but never was published. The reason why it was never published may not be without interest to the student of horse genealogy, and I will, in a few words, state that reason. Side by side with the progress of the second volume of the runners, I was carrying forward a careful investigation of the lineage of the early trotters and their progenitors. As there were no trotting records giving pedigrees, I was compelled to go back to the breeders as the only source of reliable information. When I obtained this from intelligent and reputable people I accepted the information and stood by it as the truth; and when I came to compare it with the representations of pedigree made in advertisements of some stallion scion of the family, the truth began to dawn upon me that advertisements, whether in newspapers or on crossroads blacksmith-shop doors, with scarcely an exception, were made up of statements that were utterly false and fictitious. They were made up for the single purpose of securing patronage, and generally traced in different directions to famous and well-known horses. The fictitious extensions of stallion advertisements have served as the basis for the fictitious extensions of families and tribes. When I came to compare the extensions of trotting pedigrees with running pedigrees, I could not discover that the one was any more or less reliable than the other. They rested on precisely the same basis of stallion pedigrees, and no difference whether they appeared in Mr. Skinner’s _Turf Register_ or in a big poster, there was no censorship, and they were both in type—and whatever was in type was generally supposed to be worthy of belief. In one respect the pedigrees of running horses are more reliable than the early advertisements of trotting horses, particularly with those that raced, for they were required to give the sire and dam when they were entered in races, and a failure to comply with this rule was penalized. The sires, therefore, are generally right, but unfortunately the rule did not require the dam to be named and definitely specified, hence any one of a dozen unnamed mares by a given horse could be represented in after years as the dam of that particular horse. Here commenced the trouble in the unnamed and untraced mares that never have been nor ever can be identified. On a careful and sorrowful review of my work of many years I found that I had been working on a wrong basis from the start. Instead of discovering and arranging a great many valuable truths, as I supposed, I had devoted years to perpetuating thousands and thousands of fictions in these unknown, unnamed, and unidentified dams. This is the reason the second volume of “Wallace’s American Stud Book” never was published. The only benefit I ever derived from the work was in its educational aspects. The work made me familiar with the early running-horse history