_Cow’s Milk._--Pure cow’s milk is the best substitute for the maternal milk. Where milk is to be used for infant-feeding, it should be drawn in a properly-kept cowshed, it should be cooled, placed for delivery in vessels of a suitable size for an individual infant’s meal, diluted or otherwise prepared as demanded by the age and special necessities of the case, and used as soon as possible. To-day the price of cow’s milk suitable for infant-feeding is so high that the lower classes find it almost impossible to obtain it. It is a matter of very great importance that good milk should be rendered available for the lower classes at a low price. Recently much attention has been paid to the improvement of the technique of milking, of the transport of milk, and of the care of milk when delivered. The local authorities supervise the production and transport of milk as a part of their public-health administration. Improvements in cattle-breeding, a thorough organisation of the cowsheds and dairies and of the methods of milking, and an organisation of the entire dairy business have effected much improvement. Both private associations and the local authorities begin to lay stress on the supply of milk for infants, especially in towns, in which the provision of good milk is even more important than it is in country districts. We must leave the question open whether infants can be infected by the milk of cows suffering from _Perlsucht_ or bovine tuberculosis; it certainly cannot be a matter of indifference whether the milk contains tubercle bacilli. At the present time, unfortunately, in the anything but hygienic dairies of our country districts, many of the cows are suffering from _Perlsucht_.