FEEDS FOR ANIMALS 79 



in bed and rests considerably during the other two-thirds. 

 Even the heart takes a rest after every beat. So also the 

 stomach or rather the digestive system as a whole needs a rest 

 after digesting a meal. 



It is a custom of many workmen to take a drink about every 

 half hour during the day. This is a bad practice because it 

 keeps the digestive system in a constant state of work and 

 uses up or rather throws out into the digestive tract and 

 wastes the digestive enzymes. These are the active prin- 

 ciples in the digestive juices that aid in digestion. Then when 

 the next meal is eaten there is neither the necessary energy 

 nor enzymes to digest it. People who thus misuse themselves 

 frequently use their horses with more consideration than they 

 do themselves. Their horses are watered only at mealtimes 

 when they should be watered. 



Water is very often erroneously taken on a hot day between 

 meals. It is taken for its cooling effects w^hich is not a good 

 polic}^ The advice frequently given, to take a little oatmeal 

 with water between meals, is good advice. So also is the habit 

 of eating a lunch when one takes a drink between meals. 

 This does not mean that it is a good thing to eat and drink 

 between the regular meals. People very often eat too much. 

 But when a drink is taken it starts the flow of digestive juices 

 and if some food is taken at the same time these are not wasted 

 but used. It is expended upon the food and this is appro- 

 priated. Under such conditions less need be eaten at the next 

 mealtime. But, of course, it is better to give the stomach a 

 rest between meals. From this it is also seen that one large 

 drink is better than several small ones. A drink is a drink 

 in starting the digestive machinery, and a small one is as bad 

 as a large one. 



Transportation. — The transportation or circulatory system 

 of the body is built on the same plan as a city water supply 

 system or as Mr. Rockefeller's pipe line system for carrjnng 

 oils from one part of the country to another. It is the most 

 economical system of transportation. 



Besides carrying the digested food particles out to the cells 

 where they are used the circulatory system also brings back 

 the waste products of metabolism to the points of excretion. 



