THE SEED. 239 



present, together with phosphorus, sulphur, potassium, 

 chlorine, and the other elements essential to plant life. Of 

 carbonaceous matter, however, two varieties occur. Some 

 seeds contain large amounts of carbohydrates, chiefly starch, 

 while others are practically devoid of starch, but contain fats 

 or oils in large proportion. 



