300 BOTANICAL GAZETTE } [APRIL 
1G. 37—The position of the first primary wall and the large polar cavity 
is to be noted. 
Fic. 38.—The second antheridial cell dividing. 
Fics. 39-40.—Laterally placed derivatives of first and second antheridial 
ells. 
Fics. Lass —The baa primary division. 
Fic. 41.—A polar 
Fic. 5 —Large chants nucleus (tube nucleus): the third antheridial 
cell just before mitosis; the second in normal condition except for compression; 
the first a ee 
Fic. pact eis in the first antheridial cell (cf. fig. 28). 
he 7, 48, 50, 51.—Division of the third antheridial cell to form a 
gg aie ing es a sterile cell. 
. 52.—Showing polar cells, the products of secondary divisions. 
. 53-—Shows disintegrating derivatives of the first antheridial cell; 
a date cell; a spermatogenous cell and the primary nucleus (or tube nucleus). 
