The mortality in typhoid fever varies from five to twenty per cent., depending upon the character of the disease and the nature of the nursing and treatment that the patient receives. _Modes of Infection._--It is clear that typhoid fever is the result of the entrance into the body of some minute form of germ-life, whether this be the bacterium generally supposed to induce the disease or not. This contagion is beyond question a living something which multiplies with great rapidity under proper conditions, and, escaping from the bodies of those infected with the disease, in one way or another, reaches other individuals. It is beyond question true that the virus passes from the body of those infected by means of the urine and feces, and it is likely that the secretions from the mouth and nose frequently contain the germs that cause the fever. As the germs are certainly extraordinarily minute, a very small amount of any of these excretions might produce the disease in healthy individuals if it were to get into their bodies through water, milk, or any uncooked food, or if it were to find lodgment about the nose or mouth, or get upon the hands of other persons. It should also be remembered that the virus may easily get upon cooking-utensils, drinking-cups, bed-linen, and other articles with which we are constantly brought into close contact, and that the disease might be transmitted in this way. It is also true that the malady may be carried from place to place by insects, particularly flies; the latter may readily get enough infectious material upon their legs in various ways, and then, crawling over the food, leave the deadly poison deposited upon it. _Treatment of Typhoid Fever._--As soon as the symptoms appear, a physician should be called and his directions faithfully and carefully followed out. Nothing in this disease is of more importance than careful nursing, and it is absolutely necessary that the patient receive only liquid diet until the physician permits other food.