Let from five to ten pounds of selected wheat flour be packed in a bag so as to form a ball, tied with a strong cord, and boiled with the water constantly covering it from four to seven days. The starch appears to be so changed that it is more soluble and more quickly and easily digested. It is not necessary that the water be constantly boiled, provided that it remain hot or warm—the fire may go out at night. The same change may be effected by dry heat, the flour being placed in pans in the oven or on the stove, but it is very liable to be scorched by an excess of heat.

The flout removed from the bag and deprived of its external portion, which is wet, resembles a piece of chalk, but it has a yellowish tinge. The flour should be grated from it as it is required for use, and sifted to separate the small lumps which are likely to be broken off by the sieve. The infant will be better nourished if instead of diluting the milk with which it is fed with plain water, a thin gruel prepared by boiling a few minutes this flour in water, be employed.

Two heaped teaspoonfuls of the flour to a pint of water suffice for infants under the age of three months, three teaspoonfuls for infants between the ages of three and six months, and four teaspoonfuls to the pint of water after the age of six months. The proportion of the gruel to the milk should be the same as stated above when pure water is employed.