To give an instance: There is a disease of the lungs called Scrofiuska, which impedes respiration, and is besides often attended with cough, emaciation of the body, and other symptoms like those that accompany consumption, for which indeed it was formerly mistaken. It is now well known to be a different disease, requiring different treatment. In scrofiuska the lungs swell inwardly, but tubercles are not generated, and, unlike consumption, this disease can be cured even when at its height. I recollect a bad case, early in my reign, where our physicians, mistaking the complaint for confirmed consumption, declared that the right lung was gone. A short time afterwards the real nature of the disease was discovered, and the patient was completely restored to health.
In both complaints, however, the perspiration, when viewed through our microscopes, presents exactly the same appearance. In consumption, and to a greater extent in scrofiuska, the lungs are covered with a web-like moisture, portions of which are thrown off by the system with the perspiration.
The ordinary appearance of perspiration in a healthy state is that of an oleaginous liquid consistency resembling, say, a thin cream; but the water exuded by the lungs has the appearance of dew, and is indeed called by a term signifying "lung-dew." It does not amalgamate with the oleaginous part of the perspiration.
Our doctors at first thought that they could detect incipient consumption from the appearance of this dew, whilst they had only ascertained that the germs of some one of several diseases existed in the system. For although the presence of lung-dew in any quantity gives intimation that all is not right, the specific malady is not indicated with certainty. The application of certain tests to the patient is necessary to discover the particular disease with the incipient germs of which he is afflicted.
Disease and contagion difficult to deal with in their advanced stages, when they have already made their presence known by symptoms too palpable to be disregarded, are easily mastered in their germ.
To collect the perspiration, a little instrument, called "the scraper," is passed over the skin, and at each turn deposits the perspiration in an air-tight receptacle attached to the instrument.