Where milk is delivered at the factory, we have as yet no standard test of value. All the receiver can do is to see that it is in a normal condition--neither sour nor tainted, nor containing bad odors. For this purpose, the smell must mainly be relied on. Hence, healthy and keen olfactories are a great aid here, as in some other cases. If one catches the fumes when the can cover is first removed, or as the milk runs into the weighing can, he is pretty sure to detect any very positive bad odor. The eye, to one of experience, is almost certain to detect any great variation. Even slight watering is seen by some from the peculiarity of the reflection of light from the surface--especially when in motion. Much water shows from the "thin" appearance of the fluid. Where the smell or appearance are cause for suspicion, or there is any other cause, a sample may be saved and such tests as are at hand may be applied. The so-called lactometer will show whether the specific gravity is below or above the normal standard. The cream gauge will give the percent of cream at a given temperature. If, afterward, a sample right from the herd, taken so as to know that it has not been tampered with, shows better quality by these two tests, it is pretty conclusive evidence that the milk from which the factory sample was taken was not in a normal condition. If the herd has been subject to no change of feed or conditions between the times of taking the two samples, any jury would be safe in bringing in a verdict against the defendant for watering, skimming, or otherwise tampering with his milk, as the facts in evidence might indicate. BAD MILK. Sour or tainted milk, to any perceptible degree, ought not to be received at the factory. One such mess will injure, if it does not spoil, a whole batch. The sour milk is likely to lead to a sour, leaky batch, and the tainted milk to huffy if not floating curd, and porous, quickly off-flavor and decaying cheese. We have little patience with those who deliver such milk, and none with those who attempt to devise means to work it into palatable cheese and thus to get it into the unsuspecting stomachs of the consumers. It is too much like making omelets of rotten eggs. This is especially the case with tainted milk. The first stages of souring are not so objectionable, so far as wholesomeness is concerned. Sour milk may make good pot-cheese to which we do not object, but it will not make good American cheddar cheese. To attempt to work it into this is the worst use it can be put to. WEIGHING.