“There is a sign that may be mentioned here, (though it does not properly belong to the Guenon system,) which is a very certain evidence that a cow will give a large quantity of milk, though it expresses nothing in relation to quality. It is the large size of the vein running forward from the udder, on the belly, and just under the skin. This is called the milk vein, and when it is very large and crooked, and enters the abdomen through a hole that will allow the entrance of a man’s finger, it is, I repeat, a sign that the cow will yield a large quantity of milk. “The time that a cow will continue to milk after she is with calf, varies in different cases—some ceasing almost as soon as pregnant, and others milking up to calving. Generally the best milkers milk the longest. Hence it follows, that a good escutcheon usually indicates continued flow as well as large quantity. Those escutcheons that are not large at the base, but that run up to the vulva symmetrical all the way, and pretty wide, indicate a yield of milk up to the time of calving.” [Illustration: A PERFECT COW—DUCHESS—Imported Jersey, belonging to Chas. L. Sharpless.] Our Mode of Judging Stock. The beauty of the Guenon system is, that _it is an aid to all other modes of selecting stock_, and therefore, it gives a decided advantage to the person who understands it over the one who does not. For instance, let two buyers go into a herd, and let them be equal judges of stock, one of them will be very apt to buy a bastard, while the other one would very positively leave her alone, simply because the latter has a knowledge of the best and surest mode of all modes of judging stock. And this knowledge does not prevent him from using his half a dozen other modes of deciding its merits, but aids them. So, too, in selecting a bull for a propagator, the believer in Guenon will select one with a good escutcheon and a fine skin, while the other will decide almost entirely by the form. And so with calves, the one who selects calves by the Guenon marks will be pretty sure to have a dairy of productive cows, while the other will have to dispose of some unprofitable ones. The one makes money, because he is working intelligently with every light of science, while the other is only _guessing_ pretty well.