Sec. 67. We call that _Vomica_ which is not burst, an _occult_ or hidden, and that which is, an evident or open one. It is of considerable Importance to treat exactly and clearly of this Topic; as a great Number of Country People die of these Imposthumes, even without a Suspicion of the Cause of their Death. I had an Instance of it some Days since, in the School-master of a Village. He had an occult and very considerable _Vomica_ in the left Lung, which was the Consequence of an Inflammation of the Breast, that had been treated improperly at the Beginning. He seemed to me not likely to live twenty four Hours; and really died in the Night, after inexpressible Anguish. Sec. 68. Whatever Distemper is included within the Breast of a living Patient, is neither an Object of the Sight or Touch whence these _Vomicas_, these inward Tumours, are so often unknown, and indeed unsuspected. The Evacuations that were necessary for the Cure, or sometimes for the Prevention, of them, have not taken place, during the first fourteen Days. At the End of this Term, the Patient, far from being cured, is not very considerably relieved; but, on the contrary, the Fever continues to be pretty high, with a Pulse continually quick; in general soft and weak; though sometimes pretty hard, and often fluctuating, or, as it were, waving. His Breathing is still difficult and oppressed; with small cold Shudderings from Time to Time; an Exasperation of the Fever; flushed Cheeks, dry Lips, and Thirst. The Increase of these Symptoms declare, that _Pus_ or Matter is thoroughly formed: the Cough then becomes more continual; being exasperated with the least Motion; or as soon as ever the Patient has taken any Nourishment. He can repose only on the Side affected. It often happens indeed, that he cannot lie down at all; but is obliged to be set up all Day; sometimes even without daring to lean a little upon his Loins, for fear of increasing the Cough and Oppression. He is unable to sleep; has a continual Fever, and his Pulse frequently intermits.