200 



ANNA HALL RAITT 



Fig. 2. L. A two-celled embryo-sac. X 530. M. A two-celled embryo-sac. 

 X 1000. N. An eight-celled embryo-sac. X 530. O. A mature embryo-sac 

 showing a pollen tube in contact with the egg, and apparently a second tube, or 

 a branch in contact with a synergid. X 530. P. The fertilized egg just before 

 division, and the polar nuclei. X 118. Q. The eight-celled embryo. X 530. 

 R. The spherical embryo and endosperm. X 118. S. An embryo-sac showing 

 the haustorium of endosperm tissue penetrating the micropyle. X 118. 



