Mr. Youatt states, "There are few diseases to which cattle are so frequently subject, or which are so difficult to treat, as jaundice, or yellows." Hence it is important that the farmer should know how and in what manner the disease may be prevented. And he will succeed best who understands the causes, which often exist in overworking the stomach, with a desire to fatten. Men who raise cattle for the market often attempt to get them in fine condition and flesh, without any regard to the state of the digestive organs, the liver included; for the bile which the latter secretes is absolutely necessary for the perfection of the digestive process. They do not take into consideration the state of the animals' health, the climate, the quality of food, and the quantity best adapted to the digestive powers; and what is of still greater importance, and too often overlooked, is, that all animals should be fed at regular intervals. Some men suppose that so long as their cattle shall have good food, without any regard to quantity,--if they eat all day long, and cram their paunch to its utmost capacity,--they must fatten; when, in fact, too much food deranges the whole digestive apparatus. As soon as the paunch and stomach are overloaded, they press on the liver, interfering with the bile-secreting process, producing congestion and disorganization. Diseases of the liver may be produced by any thing that will for a time suspend the process of rumination: the known sympathy that exists between the stomach and liver explains this fact. Digestion, like every other vital process, requires a concentration of power to accomplish it: now, if an ox should have a bountiful meal, and then be driven several miles, the process of digestion, during the journey, will be partly suspended. The act of compelling an ox to rise, or annoying him in any way, will immediately suspend rumination, which may result in an acute disease of the liver. In most cases, however, the stomach is primarily affected. Dealers in cattle often overfeed the animals they are about to dispose of, in order to improve their external appearance, and increase their own profits: the consequence is, that such animals are in a state of plethora, and are liable at any moment to be attacked with congestion of the liver or brain. Again. If oxen are driven a long journey, and then turned into a pasture abounding in highly nutritious grasses or clover, to which they are unaccustomed, they fill the paunch to such an extent that it becomes a matter of impossibility on the part of the animal to throw it up for rumination; this mass of food, being submitted to the combined action of heat and moisture, undergoes fermentation; carbonic acid gas is evolved; the animal is then said to be "blown," "hoven," or "blasted." Post mortem examination, in such cases, reveals a highly-congested state of the liver and spleen.