A good escutcheon is symmetrical. The feathers on the two thighs are at equal distance from the middle line of the body, and extend up to equal heights on the back parts of the thighs. A broad and high escutcheon, (speaking now only of the lower broad part of it,) that is _alike on both sides_, certainly indicates a superior milker. There is nearly always another sign accompanying such an escutcheon, and that is one or two _ovals_ just above the hind teats, on which a _fine_ coat of hair grows downward. These may be large or small, may be one or two, and may be alike in size, or unlike, but they are always good signs. Two are better than one, and the larger and more uniform they are the better; they are almost always present on large and symmetrical escutcheons. No escutcheon is ever first class if it has not one or both, and one, at least, of good size. What constitutes ‘good size’ will be better learned by a few observations than can be taught by inches, and I want to leave something to the ingenuity of the learner, to make the study interesting. “Now, let us consider the shape and size of that part of the escutcheon which I have spoken of as the upper part; that is, the narrow portion that has its base on the top of the lower and wider portions, and runs up toward the vulva. Sometimes, though very rarely, this does not exist at all. Sometimes it is broad, and extends all the way up, with perfect symmetry. Sometimes it terminates in a curved line, at a greater or less distance up; and, indeed, it may be seen of almost any shape. As a sign of excellence, the larger and more symmetrical it is, the better—but a good _lower_ part of the escutcheon is the main thing, and that, as a sign, can hardly be vitiated by any imperfection of the upper part. When the lower part is very good, there is usually uniformity in the part. A poor escutcheon is one that is small, or that is imperfect in form.” The Progress of His System. With his mind keenly alive to the pursuit of his investigations, he soon perceived the difference in the shape of these quirls or marks in the hair. We can imagine how, when he saw any cow with the same escutcheon as his own had, he would eagerly and closely question the owner, and then make his comparisons and deductions. Then, again, when he would see variations from his cow’s escutcheon, whether larger or smaller, though of similar shape, how he would study them over! When he would ask of the owner such questions, directed by his knowledge of the cow’s marks, the owner would stare, and think how the lad could know so well of _his_ cow. And then his secret exultation when the answers showed him that he had judged aright! We can imagine this young enthusiast going on, from step to step, filling up his leisure with his acquisitions of his new theory, which was becoming fact, and growing into a system.