In the chronic form the symptoms are not so well marked, and a horse may go for months keeping in fairly good condition and able to do its work, the disease developing very slowly, and at times showing a tendency to recover; yet such an animal is a source of danger to other horses, and also to the man taking care of him or driving him. A horse with chronic glanders, or farcy, may give the disease to another in an acute form, especially if the other one is more susceptible for some reason, such as a less strong constitution or being run down by hard work. Post mortem examination of horses with glanders, or farcy, nearly always reveals the presence of glanders nodules or tubercles in the lungs, and, in many instances, there is no doubt but what a horse may have the tubercles of glanders in his lungs for some time before showing outward symptoms of the disease, and in many cases the primary lesions of the infection occur in the lungs. A horse with lung glanders may be a source of danger to other horses and cause disease in them and yet go unsuspected for some time. A case is said to have occurred in Boston a number of years ago where a hack horse lost eight successive mates with glanders; he was finally killed and his lungs were found to be full of glanders nodules, and yet he never showed any external symptoms of glanders. Such cases could be cited in large numbers if space permitted, but one example will answer. [Illustration: BAD CASE OF GLANDERS The farcy form is shown here. The animal has not long to live. Except for experimental purposes, every horse having glanders should be killed as soon as the disease is discovered.] A horse with lung glanders may have a little dry, spasmodic cough, may look somewhat unthrifty, and if the temperature were taken it might be slightly above normal, say, 101 degrees to 101½, the normal temperature being 100 degrees. Yet such an animal might do its work, last for a long time and not be suspected as a source of danger until several cases had occurred in the stable, for which it was difficult to account. While a well-marked case of glanders or of farcy is not difficult of diagnosis, there are many obscure cases which escape detection for some time. If a horse has a well-marked discharge from one or both nostrils, with characteristic chancres visible upon the mucous membrane of the septum nasi, and hard enlarged submaxillary glands in the intermaxillary space, it is not a difficult matter to diagnose such a case, and any horseman ought to recognize it. The same is true of a well-marked case of farcy. When the lymphatic vessels on the inside of a leg, especially a hind leg, are swelled and corded, with a chain of farcy buds along their course, some of which have gathered and broken, leaving a discharging open ulcer in the skin, it is quite evident that the animal is suffering from farcy.