1904] 
COKER—SPORES OF CONIFERAE 211 
in ea 18-23. Taxus baccata; fig. 18, megaspore just before division, nucleus 
of ite y 675; fig. 19, same during first division, x 675; fig. 20, spindles 
Pigs Sree On, X 675; fig. 21, four potential megaspores in a row, X 525; 
a, eoeential noe = upper lying side by side, X 525; jig. 23; 
Sprouting of lower megaspore, 
