=Jaundice.=--I have already spoken of the jaundice of new-born infants; but a sluggish condition of the liver, accompanied by very white or pale evacuations, constipation, and loss of appetite, with a sallow tint of the skin, and sometimes even with actual _jaundice_, are by no means uncommon during the first ten years of childhood. Neither condition is serious; that of actual jaundice occurs mostly in the summer, and is then connected with the sudden onset of hot weather. When severe, it may be associated with some degree of feverishness, with dizziness, and complaint of headache, and occasionally with vomiting, while the child rests ill at night, or awakes in a state of alarm, and these symptoms sometimes give rise to the fear that the child is about to be attacked by water on the brain. But the following consideration may serve to calm anxiety on that score. The attack is not preceded, as water on the brain is almost invariably, by several days or even weeks of failing health. It is not attended by heat of head, nor by intolerance of light, nor by constant nausea; and the belly is full rather than shrunken. When to these symptoms are added tenderness on the right side, high-coloured urine and white evacuations, you may set your mind at rest, even before the yellow colour of the skin, which appears in a day or two, stamps the case unmistakably as one of jaundice. My business is, as I have said more than once, the endeavour to describe the symptoms of disease, to explain their nature, to indicate the principles to be observed in attempting their cure, and not to lay down definite rules for their treatment, with the idle expectation that I could thus enable every mother to be her children's doctor.