Professor William A. Hammond of New York mentions, in a recent number of the _Journal of Psychological Medicine_, several instances, from his own practice, of affections in the child caused by the mother's milk. 'A soldier's wife, whilst nursing her child, was very much terrified by a sudden thunderstorm, during which the house where she was then quartered was struck by lightning. The infant, which had always been in excellent health, was immediately attacked with vomiting and convulsions, from which it recovered with difficulty.' 'A lady, three weeks after delivery, was attacked with puerperal insanity. She nursed her child but once after the accession of the disease, and in two hours subsequently it was affected with general convulsions, from which it died during the night. Previous to this event it had been in robust health.' Again, Dr. Seguin of New York relates, in his work on Idiocy, a number of cases of _loss of mind_ produced by the altered state of the mother's milk. 'Mrs. B. came out from a ball-room, gave the breast to her baby, three months old: he was taken with spasms two hours after, and since is a confirmed idiot and epileptic.' 'In a moment of great anxiety Mrs. C. jumped into a carriage with her suckling, a girl of fifteen months, so far very intelligent and attractive. The child took the breast only once in a journey of twenty miles, but before arriving at destination she vomited several times, with no interruption but that of stupor, and after an acute fever the little girl settled down into the condition of a cripple and idiot.' The celebrated physician Boerhaave mentions the milk of an angry nurse as among the causes of _epilepsy._ These facts show the importance of a placid mind and cheerful temper in the mother while nursing. POSITION OF THE MOTHER WHILE NURSING. The habit of nursing a child while sitting up in bed or half reclining upon a lounge is a wrong one. Such a position is injurious to the breasts, hurtful to the woman's figure, and apt to cause backache. When in bed, the mother ought always to be recumbent while the child is at the breast, held upon the arm of the side upon which she lies. When out of bed, she should sit upright while nursing. QUANTITY OF MILK REQUIRED BY THE INFANT. The amount of milk furnished every day by a healthy woman has been estimated at from a quart to three pints. An infant one or two months of age takes about two wine-glassfuls, or three ounces, every meal; that is, as it sucks every two hours, excepting when asleep, about five half-pints during the twenty-four hours. When it attains the age of three months, it thrives well on five meals a day, the quantity taken at each meal then, the stomach being more capacious, amounting to about half a pint. A child above three months of age ordinarily requires three pints daily.