Emaciation and Debility are characteristic of the disease. They fluctuate as the disease advances or is retarded, increasing to the very last.

Auscultation and Percussion constitute valuable means of diagnosis from the time tubercular matter begins to be deposited to the very last, and, when correctly practiced, reveal the extent and progress of the disease. As a knowledge of the sounds elicited can only be acquired by practical experience with proper instruments, they will not be described here. The only diseases with which consumption is likely to be confounded are general debility in the early stage, bronchitis, chronic pleurisy, chronic pneumonia, and abscess in the lungs, after the advent of pulmonary symptoms.

Curability. Notwithstanding the prevailing opinion that consumption is incurable, there exists ample, incontrovertible evidence to the contrary. Its curability is established beyond the shadow of a doubt. Individuals have recovered in whom there was extensive destruction of pulmonary tissue, and, indeed, entire destruction of one lung. Numerous instances are on record in which persons have suffered from all the symptoms of confirmed consumption, and have regained their health and subsequently died of other diseases. The case of the late Dr. Joseph Parish, of Philadelphia, affords a striking example of this kind. In early life, he manifested all the symptoms of confirmed consumption, including frequent hemorrhages, yet he fully regained his health, and, after a very useful life, died at an advanced age of another disease. Post-mortem examination revealed the existence of cicatrices, or scars, in his lungs where tubercular matter had been deposited. Dr. Wood, in his Practice of Medicine, mentions another instance of a medical gentleman in Philadelphia, who in early life suffered from consumption with hæmoptysis, from which he recovered, and afterwards died, at an advanced age, of typhoid fever, when the knife revealed the presence of cicatrices. Post-mortem examinations of individuals who have died of other diseases, have revealed, in numerous instances, the presence of consumption at some period of their existence. In these cases the lungs were perfectly healed by cicatrization, or by the deposit of a chalky material. A French physician made post-mortem examinations of one hundred women, all of whom were over sixty years of age, and who had died of other diseases, and in fifty of them he found evidences of the previous existence of consumption.

Professor Flint says that consumption sometimes terminates in recovery, and that his observations lead him to the conclusion that the prospect of recovery is more favorable in cases characterized by frequent hemorrhages. Drs. Ware and Walshe are also led to the same conclusion.

Professor J. Hughes Bennett, of Edinburgh, has thoroughly investigated the subject, and adds his testimony to that of others, citing numerous cases that have resulted in perfect recovery. If such testimony is not sufficient, we may mention the following, whose names are well known and respected in professional circles, and all of whom declare that consumption is a curable disease. The list includes Laennec, Andral, Cruveilhier, Kingston, Presat, Rogée, Boudet, and a host of others.

No farther back than 1866, on page 145, of the proceedings of the Connecticut Medical Society, we find "Observations, Ante-mortem and Post-mortem, upon the case of the late President Day by Prof. S.G. Hubbard, M.D., New Haven," from which we learn that Jeremiah Day, LL. D., who was for twenty-nine years President of Yale College, was, while a mere youth, a victim of pulmonary consumption. During his infancy and boyhood his vitality was feeble. He entered Yale College as a student in 1789, "but was soon obliged to leave the institution on account of pulmonary difficulty, which was doubtless the incipient stage of the organic disease of the lungs which subsequently developed itself." He remained in feeble health for two years, but returned to college, and graduated in 1797. For the next six years his lung difficulties were quite severe, and he repeatedly bled in large quantities, but he had so far recovered in 1803, as to accept a Professorship. He was afterwards chosen President of the college, which office he held for many years, in the enjoyment of good health. He died from "old age," as we are told, in 1867, aged 94 years.

Statistics show that under the improved methods of treating this disease, the mortality, as compared with previous years, has been greatly reduced. Clinical observation proves that injuries to the lungs are not so fatal as was once supposed.

Treatment. The earlier the treatment of this disease is undertaken, the greater is the probability of success. The reason of this is obvious; at first the disease is general or constitutional, but as it advances, by the deposit of tubercular matter, it becomes both constitutional and local. Hence the treatment must be both general and local. The occurrence of certain prominent and distressing symptoms, either from the natural progress of the disease, or from complications with other affections, often renders it difficult, even for physicians, to determine how far their treatment should be general and how far local.

Treating the symptoms instead of the general disease, or treating the constitutional disease without regard to the symptoms which arise from it, is an error into which many physicians have fallen. The constitutional affection, the local manifestations and complications, and the circumstances and individual peculiarities of the patient, must all be carefully considered; bearing in mind all the while, that tubercular matter is the product of a morbid action, which, in every case, must exist before its deposition in the lungs, or any other tissue, can take place.

In every case in which curative treatment is to be instituted, the hearty and persistent co-operation of both patient and friends is absolutely necessary; and the treatment, which is both hygienic and medical in character, should have in view the following aims: