It is known in this country by the name of _German measles_, or sometimes by its German name of _Roetheln_; the first clear description of its character having been given by German writers. It is unfortunate that a very slight resemblance of some of its symptoms to those of scarlet fever has led to its being sometimes mistaken for it, and as the ailment is almost always very trivial, doctors anxious to avoid alarming their patients' friends, too often allow the error to go unrectified, and the disease to pass as one of mild scarlet fever. The resemblance of German measles to scarlet fever is, however, extremely slight, and is almost entirely limited to the existence of a slight sore-throat, unaccompanied with glandular swelling. The rash in no respect resembles the uniform redness of the scarlatinal eruption, and there is no peeling of the skin, nor even any roughness of the surface left behind. Slight feverishness sometimes precedes the appearance of the rash for twenty-four hours; but the cough, and sneezing, and running at the eyes and nose, which usher in measles are entirely absent. The rash usually appears in the course of twenty-four hours, is never postponed beyond the second day; it begins, like that of measles, on the face, and, like it, travels downwards, but always disappears on the third day, while that of measles is not entirely gone before the eighth or ninth. The rash itself also has a different character. It consists of small, slightly elevated, round red spots which now and then coalesce into small patches, but never have the somewhat crescentic arrangement observed in the rash of measles. The colour of the spots is somewhat darker than that of the eruption of measles, while the _skin between them remains pale_, and does not assume the flush of measles. As it disappears it simply fades, and does not at all change its tint as that of measles does, and it leaves the skin unroughened. Now and then German measles are severe, and are attended with a good deal of fever for a day or two, and even with symptoms of bronchitis. These cases are, however, very unusual, are seen only at times when the disease prevails epidemically; and even then the symptoms of the affection are sufficiently marked to preserve from error all but those who wish to be deceived, and to flatter themselves that their child is henceforth protected from scarlatina. =Scarlatina=, or =Scarlet Fever=, for the two names mean the same thing, the former being only the Latin term, and not implying any greater mildness of the disease, is one of the most formidable ailments of childhood, and especially of early childhood, since the highest mortality from it takes place during the third year of life.