THE CHEMICAL COMPOSITION OF FEEDINGSTUFFS 3 



The elementary composition of these classes of com- 

 pounds or nutrients is shown in the following diagram, which 

 is a modification of a similar diagram presented by Jordan.^ 



All vegetable 



and animal 



matter 



Inorganic 

 compounds 



Water 



x\sh or mineral 

 matter 



Organic 



compounds ^ 



Crude protein 



f Hydrogen 

 \ Oxygen 



Oxygen 

 Sulphur 

 Phosphorus 

 Carbon 

 Chlorine 

 Sodium 

 Potassium 

 Calcium 

 Magnesium 

 . Iron 



f Carbon 

 Hydrogen 

 Oxygen 

 Nitrogen 

 Sulphur ~ 



. Phosphorus 



{Carbon 

 Hydrogen 

 Oxygen 



{Carbon 

 Hydrogen 

 Oxygen 



The average chemical composition of feedingstuffs is given 

 in Table 28 of the Appendix. 



WATER 



Water, composed of the elements hydrogen and oxygen, 

 is present in variable amounts in all vegetable and animal 

 substances. It forms a large portion of the weight of such 



1 " The Feeding of Animals," p. 30. ^ Generally. ^ Sometimes. 



