402 STUDIES IN SEEDS AND FRUITS 



they occur, the coloration of the seed-coats varies greatly, there is no 

 connection between the two characters (p. 395). 



(14) The red seeds of leguminous plants are then discussed, 

 especially with reference to the conditions in which the red colour is 

 produced and to the changes caused during germination. Those of 

 Abrus precatorius^ Adenanthera pavon'ina^ and Canavalia gladiata are 

 taken as examples (p. 395). 



(15) It is shown that the long duration of the red colour of the 

 above seeds depends on the impermeability of their coats and on the 

 non-hygroscopic behaviour of the seeds (p. 398). 



(16) The stages in the coloration of the seeds of Iris foettdissima are 

 described (p. 399). 



(17) The coloration of immature seeds whilst their contents are 

 still fluid and before the embryo is recognisable is remarked in the 

 cases of some monocotyledons (p. 399). 



