The process of peptonization, already described, is very useful in the preparation of food for absorption by the lining membrane of the rectum. Peptonized milk No. 1, or an egg mixed with a pint of milk and thoroughly peptonized, is the best food for employment in this way, the only caution being to administer in small quantities - from four to eight tablespoonfuls according to age - and at intervals of not less than four hours. The injection should be made gently and slowly and the liquid should be warmed to a temperature of 98°F. It is essential, too, in rectal feeding to keep the lower bowel clear by a daily irrigation of warm (98°F.) normal saline solution (1 teaspoonful of salt to 1 pint of boiled water).

Fig. 23. - Syringe for Nutritious Enemata.

The best syringe for the operation is shown in Fig. 23.