Infectious diseases, such as Typhoid and Scarlatina, are frequently conveyed by cow's milk. There is also reason to believe that in certain cases of Tuberculosis the infection has been conveyed by milk from tuberculous cows. These risks can only be absolutely avoided by sterilising the milk, _i.e._, by placing the jug in a pan of water and bringing the water to the boil, keeping it so for twenty minutes. If the milk is kept covered, and rapidly cooled by placing in another pan of cold water, but little boiled taste will be felt. Sometimes, however, sterilised milk disagrees with an infant; if so, the strictest watch must be kept on the history of the milk used. It should be remembered that this disease is not hereditary. It is only the delicacy of constitution predisposing to the disease that is inherited. This delicacy may, especially in childhood, be remedied. We have known hundreds of tender children made strong by liberal daily MASSAGE (_see_). In all cases where hereditary weakness is feared this should be resorted to. In many cases nothing more is needed to banish consumption out of families than the stimulation of the skin by this massage. Wearing linen underwear (_see_ Underwear) also assists in this direction and prevents chills. As it is of prime importance to increase the chest capacity, and this is most easily done in youth, great attention should be paid to chest expanding exercises (_see_ Appendix) and deep breathing. The cultivation of singing will greatly help. Consumption, Treatment of.--Turning now to the case when consumption has actually shown itself, the above treatment is exactly the course to be pursued. But we would emphasise the fact that unlimited fresh air and good nourishing foods are the only cure. If the patient can afford it, it is best to go to one of the Sanatoria for consumptives in order that he may see how the fresh air cure is practically carried out. It means simply breathing every mouthful of air as pure as it can possibly be obtained. Sleeping out in a hut, with the side completely open, and with protection only from the rain, with abundance of clothing, and, if necessary, hot-water jars to supply the required heat, is strongly recommended, and every hour of the day, as far as possible, should be spent in the open air, reclining or taking gentle exercise.