DAIRY MEETING, 1 67 



foods. For instance, in bread there is practically no waste; in 

 beef the waste is about 10%. In chicken, take out the skin and 

 bones and there is about 40% waste. So in buying we roust 

 consider what we are buying for. 



Water, perhaps, is not classed as a nutrient, as it does not 

 help out in the building up or repairing of the tissues of the 

 bod}', nor give us energy to do our work. Nor yet does it give 

 us heat, yet water is essential for us to have. Without it we 

 could not live. The nutrients, properly speaking, would be 

 protein, carbohydrates and mineral matter. 



Why does the body need food? There are perhaps three 

 needs. We need food to build up the tissues. In children the 

 building property is stronger, and when the child is grown there 

 is need constantly of the repairing. There is always the need 

 of repairing, and it is going on in the body from infancy until 

 death. We need that class of food that will supply the repair- 

 ing property, and also the building, and then the energy produc- 

 ing power. We must have the necessary food so that we can 

 have the energy for our work and for play. Of course in speak- 

 ing of playing, we speak of muscle playing, and that is always 

 work. And then we need the food not only for energy, but to 

 produce heat. 



The one point that I wish you to surely remember tonight is 

 that there is just one class of food that will go to building up 

 and repairing the tissues, and that class of food is the protein 

 food, but protein, fats and carbohydrates, all three can help to 

 produce energy in the form of muscular heat and power. But 

 we find out if we study further that the protein food is the most 

 expensive fuel food. We want to take into our bodies enough 

 fat and carbohydrates to give us all the energy necessary for us 

 to have for the 24 hours' work, and not have to draw on the 

 protein to supply that. 



Of the agricultural bulletins gotten out by the United States 

 Department there, are several that help us wonderfully in the 

 subject of food study, and if you are interested and write them 

 to send a list of their publications they will do so, and out of 

 that list you can select some bulletins that will help you in this 

 study of food, so that you will know and understand how much 

 food is necessary, how much food we ought to take in the 24 

 hours, in order to have the right amount for a person to 

 work on. 



