As to catarrh spreading from the nose and throat to the other mucous membranes, that is also quite out of the question if it is supposed to occur in the way that the advertising specialist likes to announce. Catarrhal conditions may occur in the stomach, but like those of the nose and throat they are not serious, heal completely, and produce no definite changes. A pinch of snuff may cause a catarrhal condition of the nose, that is an increase of secretion due to hyperaemia of the mucous membrane; the eating of condiments, of Worcestershire sauce, peppers, and horse-radish may cause it in the stomach. It may be due to microbic action or to irritant or decomposing food, but it is not a part of a serious, wide-spreading pathological condition that will finally make the patient miserable. It is surprising, however, how many people say with an air of finality {35} that they have catarrh, as if it should be perfectly clear that as a result they cannot be expected at any time to be in sufficiently good health to be called on for any special work, and of course if any affection should attack them, their natural immunity to disease has been so lowered by this chronic affection, of which they are the victims, that no strong resistance could be expected from them. All this is merely a dread induced by paying too much attention to medical advertisements. It is better not to know as much as some people know, or think they know about themselves, than to know so many things that are not so. Their dreads seriously impair their power to work and leave them ill disposed to resist affections of any kind that may attack them. It is a sad confession to make, but not a little of the enforced study of physiology in our schools has become the source of a series of dreads and solicitudes rather than of helpful knowledge. We have as a result a generation who know a little about their internal economy, but only enough to make them worry about it and not quite enough to make them understand how thoroughly capable our organisms are of caring for themselves successfully and with resultant good health, if we will only {36} refrain from putting brakes on their energies and disturbing their functions by our worries and anxieties.