It is now suspected that tuberculosis is transmitted to children mainly from the milk of cows affected with this disease. Cows are exceedingly liable to tuberculous disease of the udder. It is therefore very difficult to get milk guaranteed free from the tubercle bacillus, and recent examinations of that coming into Manchester and Liverpool showed that from 18 to 29 per cent. contained this deadly germ. (Strange to say, tubercular disease of the mother's breast is practically unknown, and children never derive the disease from their mother's milk.) It is therefore of the greatest importance that only the milk of cows proved free from this disease should be used. The disease is easily detected, and if a demand were created for milk guaranteed free from the germs, dairymen would soon supply it. Unless it is _absolutely certain_ the cows supplying the milk are free from disease, the milk should be sterilised by heating to near boiling point, and then cooling _rapidly_. If kept twelve hours, the boiled taste goes off it, and children soon get to like it. Though sterilised milk will keep for some time without getting sour, it should be sterilised each day, specially if for infant use. This treatment makes the milk keep without the use of preservatives, such as boric acid. We regret to say the use of these is not illegal, and they are largely used in preserving milk, butter, hams, etc. We have seen very serious illnesses produced in children (and adults too) by the heavy doses they have got when both the farmer and milk vendor have added these preservatives. This they often do at the season when the milk easily turns sour. Every care should therefore be taken to get milk guaranteed free from these noxious drugs; and if this is impossible, condensed milk should be used instead. As there is a great variety of brands of condensed milk in the market, always choose one which guarantees that the milk taken has been whole milk, and also unsweetened. Infants' Sleep.--_See_ Children's Sleep.