I have never seen a dry tongue in any of the forms or stages of this disease. The three different forms of the pulmonary affection that I have mentioned, have been distinguished by the names of the first, second, and third stages of the consumption; but as they do not always succeed each other in the order in which they have been mentioned, I shall consider them as different states of the system. The first I shall call the INFLAMMATORY, the second the HECTIC, and the third the TYPHUS state. I have seen the pulmonary consumption come on sometimes with all the symptoms of the second, and sometimes with most of the symptoms of the third state; and I have seen two cases in which a hard pulse, and other symptoms of inflammatory action, appeared in the last hours of life. It is agreeable to pursue the analogy of this disease with a pneumony, or an acute inflammation of the lungs. They both make their first appearance in the same seasons of the year. It is true, the pneumony most frequently attacks with inflammatory symptoms; but it sometimes occurs with symptoms which forbid blood-letting, and I have more than once seen it attended by symptoms which required the use of wine and bark. The pneumony is attended at first by a dry cough, and an expectoration of streaks of blood; the cough in the consumption, in like manner, is at first dry, and attended by a discharge of blood from the lungs, which is more copious than in the pneumony, only because the lungs are more relaxed in the former than in the latter disease. There are cases of pneumony in which no cough attends. I have just now mentioned that I had seen the absence of that symptom in pulmonary consumption. The pneumony terminates in different periods, according to the degrees of inflammation, or the nature of the effusions which take place in the lungs: the same observation applies to the pulmonary consumption. The symptoms of the different forms of pneumony frequently run into each other; so do the symptoms of the three forms of consumption which have been mentioned. In short, the pneumony and consumption are alike in so many particulars, that they appear to resemble shadows of the same substance. They differ only as the protracted shadow of the evening does from that of the noon-day sun. I know that it will be objected here that the consumption is sometimes produced by scrophula, and that this creates an essential difference between it and pneumony. I formerly admitted scrophula to be one of the _remote_ causes of the consumption; but this does not invalidate the parallel which has been given of the two diseases. The phenomena produced in the lungs are the same as to their nature, whether they be produced by the remote cause of scrophula, or by the sudden action of cold and heat upon them.