inutes if the milk is to be
partially peptonized; for two hours if it is to be completely
peptonized.

_What taste has partially peptonized milk?_

None, if peptonizing is continued for only ten minutes, but at the end
of twenty minutes it begins to be bitter, when the process of
digestion has gone further.

_How is the bitter taste avoided in partially peptonized milk?_

At the end of ten or fifteen minutes the milk may be placed in a
saucepan and quickly raised to boiling point; this kills the ferment,
so that the milk will not become bitter when warmed a second time. Or,
the milk may be rapidly cooled by placing the bottles first in cool
and then in ice water; in this way the ferment is not destroyed, and
the milk may become bitter when warmed for feeding.

_Should the whole day's supply be peptonized at once, or each bottle
separately just before the feeding?_

Either plan may be followed. If the former, it is better to raise the
milk to boiling point after peptonizing; if the latter, it should not
be peptonized more than ten minutes, for it will continue to peptonize
while it is being taken by the child.

_Is not the bitter taste of completely peptonized milk a great
obstacle to its use?_

Not in the case of young infants; one under four or five months old
will usually take it without any objection after two or three
feedings; but it cannot often be used for those who are much older.

_How much of the peptonizing powder should be used?_

There are required for one pint of plain milk, five grains of the
extractum pancreatis and fifteen grains of bicarbonate of soda. This
quantity is usually put up in a single tube or tablet. In the formulas
previously given, less than this will be required; for the weaker
formulas, one half or one third of the powder mentioned will be
sufficient for one pint of food. For a single feeding of four ounces,
one may use one eighth of a tube with a weak formula, or one sixth of
a tube with a stronger formula.

_What are the advantages of peptonized milk?_

Partially peptonized milk is useful for young infants who have great
difficulty in digesting the curd of milk, sometimes even when diluted
as already described; completely peptonized milk, during acute attacks
of indigestion.

_For how long a period may the use of peptonized milk be continued?_

Completely peptonized milk may be used for a few days, or at most a
few weeks; partially peptonized milk may be used for two