THE HYGIENE OF THE DINING ROOM 



6 7 



U. S. Department of Agriculture Prepared by 



Office of Experiment Stations C. f. LANGWORTHY 



A. C. True: Director Expert in Charge of Nutrition Investigations 



COMPOSITION OF FOOD MATERIALS. 



rTTTTTTT 



Protein Fat Carbohydrates Ash 



Water 



I Fuel Value 

 J-^Sq. In. Equals 

 1000 Calories 



FUEL VALUE: 





ONION 



Wat 

 Protei 



Carbohydrates: 9.9 

 /J*Vater:83.0 



-Protein:!. 6 



FUEL VALUE: 



C225 CALORIES 

 PER POUND 



CELERY 



30 CALORIES Vis 



PER POUND ^jp :Ash:1..4 



PARSNIP 



POTATO 



Protein:2.2 



Water: 



Carbohydrates: 18.4 ^Water:78.3 



FUEL VALUE: ProteinJJ 



Carbohydrates: 3.4 



385 CALORIES PER POUND Ash:1. 



FIG. 25. Composition of vegetables. 



