But it must be borne in mind that all so-called scrofulous hyperplasias of lymphatic glands do not run this destructive course. Undoubtedly, in a few cases there remains a sufficient nutritive supply to carry on the liquefactive process which normally follows fatty degeneration, and thus resolution of the affected gland takes place. We are, however, of the opinion that Virchow was mistaken when he asserted that complete resolution of the cheesy material could take place; and from what we know of the dangerous and usually fatal consequences of the absorption of this cheesy detritus, Rindfleisch is certainly in error in describing this as the most desirable possibility of decomposition.

We have heretofore purposely avoided any mention of tubercle or tuberculosis as a part of the scrofulous process. In the views of many physicians the relations between the two processes are so close that to them tuberculosis and scrofulosis mean one and the same thing. While medical opinion as to the true meaning of the word tubercle was so discordant and unsettled, while so many products of diverse pathological processes were included in that term, and while many, following the view of Burdon-Sanderson of England, believed that tubercle always takes its origin in small, even microscopic, collections of lymphatic tissue, such a belief in the identity of the two processes was not only possible, but reasonable. But since, by very many good authorities, the term tubercle is now limited to the miliary or submiliary tubercle, since numerous inoculation experiments have shown that tuberculosis can be induced in non-scrofulous animals, and Koch of Germany has proved that there exists in decaying tubercle a peculiar and distinctive bacillus which even when cultivated out of the body of a tuberculous person will excite tuberculosis also if inoculated upon a non-scrofulous animal,—a belief in the identity of the two diseases seems to be no longer tenable. Certainly, it would seem that to Sanderson's view that tubercle always takes its origin in lymphatic tissue it is only necessary to reply that the subjects of miliary tuberculosis do not more frequently than those suffering from other non-scrofulous diseases present those larger glandular hyperplasiæ which are so distinctly characteristic of scrofula, and to which many persons limit the term scrofulosis. It may be said, perhaps, that the converse of this is not true, and that scrofulous persons are more frequently attacked by miliary tuberculosis than an equal number of non-scrofulous persons. But the extreme susceptibility or liability of the scrofulous to be attacked by numerous and even diverse morbid processes, and the profound cachexias and dyscrasias which the scrofulous processes engender, amply account for the apparent susceptibility of the scrofulous to be attacked by miliary tuberculosis. The strumous are more susceptible to the exciting causes of tuberculosis undoubtedly, but perhaps the same may be said in regard to measles, scarlatina, and the various other exanthemata. It is undoubtedly true also that among the lower animals (and probably also in the higher ones) the introduction into the circulation of the semi-purulent fluid resulting from the breaking down of a cheesy scrofulous gland will produce that peculiar (perhaps specific) dyscrasia which results in miliary tuberculosis. But as it has also been abundantly proved that a similar fluid derived from a cheesy pneumonia, or from the inflammatory products of any other disease which have undergone the cheesy degeneration, will also excite tuberculosis, the fact does not seem to tell in favor of the identity of, or even of any close relationship between, the two processes. Still, as the scrofulous more frequently than other people are the subjects of this cheesy process, it is not surprising that they should more frequently be poisoned by the entrance into their blood of the cheesy detritus.

We do not deem it necessary to adduce all the evidence or to state authorities upon this subject, but we think we are justified in stating the following doctrine in regard to the relation of scrofula to tuberculosis as best supported by facts and by the consensus of medical opinion:

Scrofula is a purely diathetic disease inherent in the individual.

Tuberculosis is a cachectic (possibly a purely dyscratic) one, not inherent in the individual, but always caused by some morbid influence from without. Tuberculosis may therefore occur in the non-scrofulous as well as in the scrofulous.

But the scrofulous are more likely than others to have tuberculosis—1st, because of their greater susceptibility to all morbid influences; 2d, because the scrofulous processes are apt to produce some cachectic condition which is always a condition precedent to tuberculosis; and, lastly, because the products of decay resulting from scrofulous processes may enter the circulation and directly produce the tuberculous dyscrasia. These remarks of course apply only to primary tuberculosis.

But while we thus deny anything else than a purely incidental relation of scrofula to tuberculosis, we believe that there exists the very strongest possible relationship of scrofula to pulmonary consumption. We think we are justified in stating that fully 95 per cent. of all cases of pulmonary consumption are of inflammatory origin, and of that variety miscalled catarrhal pneumonia. Broncho-pneumonia or catarrho-pneumonia more exactly describes the process. It begins as a catarrh, sometimes in the nasal passages or post-nasal fossæ, sometimes in the pharynx, but most frequently in the trachea and large bronchial tubes, and sometimes rapidly, but oftener more slowly, travels downward and invades the lining membrane of the air-sacs, which soon become packed with cells derived partly from emigration of leucocytes, partly from proliferation of the epithelium lining the sacs. These cells soon undergo the cheesy degeneration, and, finally breaking up, as in the case of the scrofulous gland, cause the formation of vomicæ attended with the familiar signs of pulmonary consumption. Every step in this process is attended with that abundant cell-production, and the process itself is marked by that inveteracy and intractableness, which always characterize scrofulous inflammations, or rather inflammations in the scrofulous. Occurring as they most frequently do in young adults, these cases are often mistaken for pulmonary tuberculosis; and as post-mortem examination generally reveals a more or less abundant secondary tubercular eruption caused by absorption of infective material from the centres of cheesy degeneration and softening, the diagnosis is claimed to be confirmed. But they are for the most part, nevertheless, cases of genuine scrofulous inflammation of the bronchial membrane and lining membrane of the alveoli, and should be called scrofulous pneumonia. It is true that Mr. Phillips, Mr. Kiener, Villemin, Grancher, Mr. Treves, and others have collected numerous statistics which would show that comparatively few of those who had died of pulmonary phthisis bore any evidence of previous scrofulous disorder. But as the principal evidence relied upon to prove this fact was an absence of scars resulting from suppurating glands, their statistics are inconclusive. Besides, it is a well-known fact that there is a decided antagonism between scrofulous diseases of all kinds, and a patient who has one severe or well-marked manifestation of scrofula is not likely to develop another strumous disease at the same time. The records of the Margate Infirmary for Scrofula show this fact very strongly, and numerous writers—among whom may be mentioned Holmes, Birch-Hirschfeld, Walsh, Mr. Treves, and others—strongly express the same opinion. Indeed, some of them go so far as to maintain that one form of the scrofulous manifestation confers protection against others. The question may perhaps be more clearly stated by saying that the scrofulous, like the non-scrofulous, have their special predispositions and indispositions to certain morbid affections, and while one scrofulous child may be specially predisposed to affections of the bones, joints, skin, or other tissues, it may have no predisposition whatever to affections of the lungs or lymphatic glands, etc. This difference in vulnerability or invulnerability of certain tissues or organs in individuals, whether scrofulous or not, is so distinctly recognized as a controlling factor in determining the special form of disease resulting from a given irritant that its discussion is entirely unnecessary. It is argued against the identity of scrofula and pulmonary consumption that the commoner manifestations of the former occur in childhood for the most part, while consumption is a disease of adult life. But this is readily accounted for by the different morbid tendencies and exposures in the two periods of life. "Scrofula tends to appear in early life on account of the unusual activity of the lymphatic system at that period, and phthisis somewhat later—at a time, indeed, when the lungs are in more active use, when sedentary and perhaps unhealthy pursuits are assumed in exchange for the liberty of childhood, when the modifying influences of puberty are active, and the structural responsibilities of adult life press heavily on an organization never other perhaps than frail.... I would, on the contrary, assert that scrofula and phthisis are as much manifestations of the same morbid change as acute bubo, acute orchitis, and acute pneumonia are outcomes of one single process—acute inflammation."10

10 Scrofula and its Gland Diseases, by Frederick Treves, F.R.C.S., Eng.; New York, 1882, p. 62.

It is entirely unnecessary—and indeed it would be too tedious—to describe the anatomical appearances of the almost innumerable lesions met with in the scrofulous. Holding as we do that scrofula is not a disease per se, but merely a condition resulting from malnutrition and consequent faulty construction of the tissues during the early years of childhood, no peculiar or distinct anatomical lesion can be ascribed to it; and yet every lesion of nutrition as well as of function may have certain specific characteristics impressed upon it by the scrofulous diathesis. These may be briefly summed up as great slowness in evolution, intractableness, incurability, and chronicity of all pathological processes, and in all inflammatory processes abundant cell-production and tendency to caseation.

SYMPTOMS, COURSE, DURATION, AND TERMINATIONS.—A great deal of fine writing has been expended in describing the physiognomy of scrofula, and for ages writers exercised their descriptive powers upon the type of face and form supposed to be indicative of the disease. It is almost needless to say that much of this has been evolved from the imaginations of the writers, while many of these descriptions are not pictures of those liable to suffer from scrofulous processes, but of those who are already the subjects of these, and are simply types, not of the scrofulous diathesis, but only of the scrofulous cachexia. Many of these pictures, too, were drawn not from the scrofulous, but the tuberculous patient, because they were considered identical. Scrofula is not confined to the dark or the fair, the dull or vivacious, nor even to the weak and puny or the strong and robust; but all these may have this faulty and often fatal construction. Nor do we believe that scrofulous children are either more brilliant or more stupid than other children. At most we can only say that the scrofulous habit is marked by a deficiency of blood and a bad nutritive state of the more important and more highly organized tissues. In some an abundance of fat is found, giving to the individual a certain amount of plumpness, which might be thought to be inconsistent with a state of bad health; in others there is an imperfect development not only of the subcutaneous fat, but of the skin and muscles also, so that they appear tender and delicate. In the first of these conditions there is supposed to be an indolent state of the processes of constructive and destructive assimilation; in the second, an unnatural activity of these processes. These differences have led to a classification of scrofula into the phlegmatic or torpid and the sanguine or erethistic forms, which Canstatt has thus described: "An unusually large head, coarse features, a thick chin, a swollen abdomen, enlarged cervical glands, and flabby, spongy flesh." The erethistic form is said to possess "a skin of remarkable whiteness, with a tendency to redden easily, and through which the rose-pink or bluish subcutaneous veins are visible, a deep redness of the cheeks and lips, blueness of the thin and transparent sclerotica, which imparts a swimming and languishing look to the eyes. The muscles of such persons are thin and soft, and their weight is light in proportion to their stature, indicating a slightness of their bones. The teeth are handsome and of a bluish lustre, though long and narrow; the hair is soft."11 Although this description may be characterized as diagrammatic, since it describes rather the extremes and not the mean of the general appearance of the scrofulous, and numerous cases will be met with that cannot be assigned to either of the above categories, yet as quite a large number of cases will be seen that obviously belong to one or the other of these types, and as, moreover, we shall see that by this classification we shall obtain valuable data for therapeutic indications, it may be well to preserve this division of the scrofulous into the lymphatic and sanguine types.