I do not know any animal so subject to 'rheumatism' as the dog, nor any one in which, if it is early and properly treated, it is so manageable. [We agree with our author, that the canine family are exceedingly liable to inflammation of the fibrous and muscular structures of the body, and there is no disease from which they suffer more, both in their youth and old age, than rheumatism. No particular species of dogs are more subject to its attacks than others, all being alike victims to its ravages. Mr. Blaine remarks, that the bowels always sympathize with other parts of the body suffering under this disease, and that inflammation will always be found existing in the abdominal viscera, if rheumatism be present, and the lower bowels will be attended with a painful torpor, which he designates as rheumatic colic. We ourselves noticed, that old setters particularly, when suffering from this disease, are frequently attacked with an acute diarrhoea, or suffer from obstinate constipation attended by griping pains, but did not know that this state of things was so uniform an accompaniment to the other affection. There are two varieties of rheumatism, the 'acute' and 'chronic', both of which are attended with either general fever or local inflammation. The attacks usually come on rather suddenly, the joints swell, the pulse becomes full and tense, the parts tender, and the eyes blood-shot, the stomach deranged, and the bowels costive. Severe lancinating pain runs through the articulation, and along the course of the larger muscles, the tongue is coated, the muzzle hot and dry, and the poor animal howls with agony. The breathing becomes laboured, all food is rejected, and if you attempt to move the sufferer he sends forth piteous cries of distress. 'The causes' of this serious affection are very numerous; among the most usual and active agents may be enumerated, exposure to atmospherical vicissitudes, remaining wet and idle after coming from the water, damp kennels, suppressed perspiration, metastasis of eruptive diseases, luxurious living, laziness and over-feeding. These and many other causes are all busy in the production of this disease. Duck dogs on the Chesapeake, we have noticed as often suffering from this affection, owing no doubt to the great exposure they are obliged to endure; but few of them arrive at old age without being martyrs to the chronic form. 'Chronic rheumatism', generally the result of the other form of disease, is most usually met with in old dogs: it is attended with little fever, although the local inflammation and swelling is sometimes considerable. The pain is often stationary in one shoulder or loin, at other times shifts about suddenly to other portions of the body. The muscles are tender and the joints stiff, the animal seems lame till he becomes healed, and limber when all appearance of the disease vanishes. In old cases the limbs become so much enlarged, and the joints so swollen, that