concerning this matter. Indeed, some of the blame laid to the careless
handling of milk by dairymen really belongs to housewives, for very
often they do not take care of milk in the right way after delivery. As
too much attention cannot be given to this matter, explicit directions
are here outlined, with the idea of assisting the housewife in this
matter as much as possible.

51. KEEPING MILK CLEAN IN THE HOME.--Immediately upon delivery, the
bottle containing the milk should be placed in the coolest place
available, never being allowed to stand on the porch in the sun or where
such animals as cats or dogs may come in contact with it. When the milk
is to be used, the paper cap should be carefully wiped before it is
removed from the bottle, so that any dirt that may be on top will not
fall into the milk. If not all the milk is used and the bottle must be
returned to the cool place where it is kept, it should be covered by
means of an inverted drinking glass or, as shown in Fig. 6, by a glass
or porcelain cover. Such covers, or _sanitary milk_ _caps_, as they are
called, are very convenient for this purpose and may be purchased at a
slight cost.

52. Another precaution that should be taken is never to mix stale milk
with fresh milk, because the entire quantity will become sour in the
same length of time as the stale milk would. Also, milk that has been
poured into a pitcher or any other open vessel and allowed to stand
exposed to the air for some time should never be put back into the
bottle with the remaining milk. Such milk is sure to be contaminated
with the germs that are always present in the dust constantly
circulating in the air. It is sometimes necessary to keep milk in a
vessel other than the bottle in which it is delivered. In such an event,
the vessel that is used should be washed thoroughly, boiled in clean