Begin early in the morning. _Throw away the first urination._ Save _all_ further urinations for the next twenty-four hours. For instance: Patient urinates at 6 A.M. _This first urination is thrown away_, or saved for an A.M. specimen if required and patient’s bladder is empty. Save all succeeding urinations for the next twenty-four hours, at the end of which time (6 A.M.) request the patient to urinate, and _save the last_ urination also, to complete the specimen. This gives us twenty-four hours’ secretion. The addition of solution of formaldehyd (fʒij) to a twenty-four hour specimen of urine will preserve it, and prevent fermentation before the analysis is made. INFANT FEEDING. 1. If the bowel movements are curdy, we may take it as an indication of an excess of proteids. 2. Sour vomiting often indicates too much fat. 3. Stools that are very watery but without curds may result from too much sugar or too much fat. 4. Vomiting of hard, curdy masses may indicate too much proteids. 5. Should the child seem to do well on its food in every way except that it does not gain in weight, it may be that the sugar is too low. 6. Vomiting may mean that the child has eaten too much. 7. Breast milk is the best infant food. 8. No artificial food can or should be trusted which does not contain the essentials of breast-milk—viz., fat, proteids, and sugar. 9. The elements named are to be found only in milk, cows’ milk being the only one available for general use. 10. Cows’ milk must be modified, because it does not contain the same proportions of the elements named. CONSTITUENTS OF GOOD MOTHER’S MILK. Reaction Alkaline. Contains 3 to 4 per cent. of fat } Sp. gravity “ 6 to 7 “ “ of sugar } 1030. “ 1 to 2 “ “ of proteids} Inorganic materials ¹/₁₀ to ²/₁₀ of 1 per cent. Average percentage, 12 per cent. of solids to 88 per cent. of water. REGULATING THE COMPOSITION OF MOTHER’S MILK. The percentage of proteids { Increased frequency of nursing; is increased by { Increased liberality of nursing { and insufficient exercise. The percentage of fat is { Deficiency of proteid food; increased by { Excess of fatty foods and fasting. The percentage of water } Increased fluid diets. is increased by } The percentage of water } Saline cathartics and diminished is diminished by } fluid diets. Percentage of sugar and ash vary little.—DR. COTTON. FORMULÆ FOR ARTIFICIAL FEEDING FOR BABIES. Age. 1. Sugar of milk ℥j } Sterile water ℥xij } Lime-water ℥ss } From 3d to 14th day. Cream ℥ss } Milk ℥ss }