There used to be many dairymen like the old farmer who, when interrogated by the health commissioner concerning the cleanliness of his milk, laughed as he reached down into the bottom of a pail of yellow milk and grabbing up a handful of manure and straw, said: "That's what makes the youngsters grow." But it does not make them grow; it often causes them to die, and even if they do live, they live in spite of such contaminated food, for the germ which is always found in the colon of the cow (_coli communis_), probably kills more babies every year than any other single thing. It is possible to reduce the growth of these germs by keeping the milk at a very low temperature from the time it leaves the cow until the moment it gets to the home refrigerator. Those which survive this process of refrigeration may be quickly rendered harmless by pasteurizing or sterilizing at the time of preparing baby's food. In the absence of the modern sanitary dairy, we would suggest that the milk supply be improved by giving attention to the following: The cattle should be tested for tuberculosis every three months. The walls of the cowhouse should be whitewashed three times a year. The manure should be stored outside the barn. The floor of the cowhouse should be sprinkled and swept each day. The cattle should be kept clean--curried each day, and rubbed off with a damp cloth before milking. The udders should be washed before each milking. The milker can wear a clean white gown or linen duster which should be washed every two days, while his hands should be washed just before the milking. The milking pail should be of the covered sanitary order. The barn should be screened. CERTIFIED MILK Immediately after leaving the cow, the milk should be cooled to at least 45 F. It should at once be put into bottles that have been previously sterilized and then be tightly covered, and should be kept in ice water until ready for consumption. No matter how carefully the milk is handled, it is infected with many bacteria, but if it is quickly cooled, the increase of the bacteria is greatly retarded. Under no circumstances buy milk from a grocery store out of a large can. Go to your health officer and encourage him in his campaign for sanitary dairies and certified milk. Such milk as we have described under the head of sanitary dairies, when it has been tested by the board of health and has received the approval of the medical profession, is known as "certified milk;" and, although the price is usually fifteen to twenty cents a quart, when compared with the cost of baby's illness it will prove to be cheaper than the dirty milk which sickens and kills the little folks. There is no doubt that the increased use of "certified milk" has been a great factor in the reduction of deaths from infant diarrhea in recent years. BOILING THE MILK