In _fatal cases_ the sinuses are found to be filled with a glairy fluid and the mucosa thickened and raw or ulcerated. There may be enlargement of the pharyngeal lymphatic glands, and there may be attendant pharyngitis. _Treatment._ The patient must have absolute rest and cold water irrigation or icebags applied to the head. The bowels may be opened by a saline, or a diuretic administered. If the head is persistently dropped it may be kept moderately elevated by a halter tied to a higher point. Should there be no relief at the end of twenty-four hours, no time should be lost in securing free admission of air to the cavity. Cruzel advises to saw off the horn at its base, as the one certain method of securing prompt improvement and speedy recovery. If a horn and its bony support have been broken off they should be at once removed and the head turned up to evacuate the accumulated glairy fluid from the sinus. From an apparently hopeless condition a few hours will suffice to restore an appearance of good health. If the horn has not been broken and it is desirable to save it, the bone may be trephined in front of the root of the horn and the liquid evacuated, or less effectively and more painfully the horn may be bored at its root by a large gimlet. If no hæmorrhage has taken place and if active treatment has been adopted at the outset recovery may be complete in two or three days, but if the disease has been ushered in by a hæmorrhage which recurs several days in succession, amputation of the horn or trephining will be demanded. In chronic cases this should be followed by astringent and antiseptic injections and a blister may be applied to the throat or the side of the neck. In these cases too a course of mineral tonics is desirable. CHRONIC CATARRH OF CATTLE. Catarrh, chronic, summer aggravation, thickened, roughened, mucosa, discharge, twigs in nose. Question of parasitism. Treatment, remove causes, antiseptic astringents. A remarkable form of chronic catarrh with summer aggravation exists in some of the hilly districts of New York but has not received such study as to enable us to state its true nature. One or two in a large herd will have a loud snuffling breathing, which may subside so as to be entirely overlooked in winter, but reappears when put to pasture in the spring and continues in a marked form throughout the warm weather and until after the animal is returned to winter quarters. There appears to be little or no fever nor constitutional disturbance except what comes from the obstructed breathing, and the yield of milk may be unchanged. The symptoms would indicate a purely local disease. Yet so few are attacked out of a herd that it cannot be actively contagious.