60 STORRS AGRICULTURAL EXPERIMENT STATION. 
Beyond question it is desirable and perhaps necessary to rec- 
ommend that for young children the milk should not be used 
raw, but this recommendation is dependent not simply upon 
the matter of tuberculosis, but upon other factors. Ass is well 
known, milk distributes other diseases besides tuberculosis, 
such as scarlet fever, diphtheria, typhoid fever, etc. A young 
infant is extremely sensitive to the attack of various diseases, 
and under these circumstances in modern times it is certainly 
unsafe to feed a young child upon raw milk. For other rea- 
sons, therefore, entirely apart from tuberculosis, it is necessary 
that the necessity of pasteurization of milk for infants should 
be strenuously urged. Year by year, even in the United States, 
this habit of pasteurizing or sterilizing milk for infants is be- 
coming better understood and more used, and with it the 
danger from tuberculosis and other diseases distributed by the 
milk is disappearing. For adults, as we have already seen, 
there appears to be practically no danger of tuberculosis as 
derived from milk that is used as food. That there is abso- 
lutely no danger is not claimed by anyone, but the danger is 
very small in comparison with the very many other sources of 
contagion to which the adult is constantly exposed. When 
we remember that an adult is almost constantly exposed to 
tuberculosis by breathing, it is plain that we are not going to 
increase his safety to any considerable extent simply by ad- 
vising him not to drink milk which may under rare circum- 
stances contain some tuberculosis germs. The danger from 
this source is so small, compared to that from other sources, 
that it does not materially increase the probability of his tak- 
ing the disease. With the precaution, then, that animals suffer- 
ing from udder diseases be excluded from furnishing milk to 
the public, and that the milk that is used for infant feeding be 
pasteurized or sterilized, there seems to be, according to the 
best knowledge of to-day, no reason why the milk from the re- 
acting herd should not be used as well.as the milk from the 
non-reacting herd. 
Of course, if this method is adopted it will not be very long 
before the general tendency of business produces a different 
condition of things. It will not be long before the farmer who 
has thus separated his herd into a reacting and a*non-reacting 
lot will sell the milk from the non-reacting lot at an advanced 
price, and use the fact that every animal that furnishes the 
milk has been proved to be free from the disease as a means 
of advertisement. This will probably in time result in the 
