The Crigin of Wheat, 



'57 



contains only one seed instead of three ; though it 

 still retains seme trace of the original three cells in 

 the fact that there are three sensitive surfaces, united 

 together at their base into one stalk or style. Each 

 such diminution in the number of seeds is always 

 accompanied by an increase in the effectiveness of 

 those which remain ; the difference is just analogous 

 to that between the myriad ill-provided eggs of the 



Fig. 36. 

 Single flower of Scirpus. 



Fig. 37. 

 Male and Female flower of Carex. 



cod, whose young fry are for the most part snapped 

 up as soon as hatched, and the two or three eggs of 

 birds, which watch their brood with such tender care, 

 or the single young of cows, horses, and elephants, 

 which guard their calves or foals almost up to the 

 age of full maturity. What the bird or the animal 

 effects by constant feeding with worms or milk, the 



