Tumours formed by the enlargement of glands are frequently productive of dangerous consequences. If situated in the neck, they may render breathing and deglutition extremely difficult, and in the event of their suppurating, the purulent matter may be discharged into the trachea or gullet; fatal results have followed the giving way of an abscess into the former canal. The breathing is also seriously impeded by enlargement of the bronchial glands, by the pressure of which the lungs may be much condensed, and unfitted for their functions. The immediate effect of enlargement of the mesenteric glands, is interruption to the passage of the chyle, and a consequent decline of the powers of life. Such tumours in the abdomen have been mistaken for enlargement of the liver, spleen, ovarium, &c., and the most noxious treatment employed. Inflammatory glandular enlargements terminate either in resolution, in delitescence, or in suppuration; sometimes in death of the part. When the tumour, after having attained a certain size, gradually disappears, it is said to be resolved; when, however, it is rapidly discussed, it terminates in delitescence; the difference between the terms being the same as when used to express the corresponding terminations of inflammatory swelling in general. Suppuration is by far the most usual termination, and the matter is frequently evacuated through numerous small apertures, exposing the gland denuded and prominent in the middle of the chasm; in such cases, the gland proves the source of much irritation, and must be destroyed, otherwise the cure is extremely tedious. Though inflamed and swelled lymphatic glands very generally disappear by suppuration, it is to be remarked that the conglomerate glands, though often violently inflamed, seldom, if ever, have pus formed in them; in mumps, for instance, the action often runs very high, yet abscess of the parotid is rare. The submaxillary salivary glands are often supposed and said to be inflamed and enlarged; the conglobate glands superficial to them are in such cases only affected. Collections of pus in the lymphatic glands or cellular substance, in patients of a weak constitution, (whether naturally or in consequence of disease,) are attended with little or no pain, or inflammatory action; and although it is probable that inflammation does precede the formation of such purulent depôts, still it is generally so slight as not to attract the attention of the patient or his attendant. The sensation is dull and uneasy, rather than painful; and, even after the accumulation of a considerable quantity of purulent matter, redness of the surface and pointing do not occur till a late period. The contained matter is thin, flaky, and of a brownish colour. The collections often attain a very great size, and, if improperly treated, terminate in the formation of numerous and extensive sinuses.