THE BRYOPHYTES. 



181 



filiform and spatulate paraphyses. Draw. If fresh mate- 

 rial is employed, crush the antheridia by pressure on the 

 cover glass, and try to see the flagellated antherozoids. 

 This is difficult. The antheridia and paraphyses may also 

 be studied in vertical sections cut from a male head im- 

 bedded in celloidin. (See Figs. 105, 106, 107.) 



FIG. 106. Vertical section through the top of a male plant of Funaria hygro- 



metrica, showing how the antheridia are borne, a is a young antheridium ; 



& is a more mature antheridium seen in section ; paraphyses are seen at c. 



(After Goebel.) 

 FIG. 107. An antheridium of the Moss, Funaria hygrometrica, allowing the 



antherozoids to escape. At 6 is an antherozoid in its cyst; at c the anthero- 



zoid has been wholly set free. (After Goebel.) 



5. Study the female head in material collected in the 

 spring ; fresh material is to be preferred. Tease out a 

 head in a drop of water and find flask-shaped archegonia 

 with short foot stalks and long, slightly curved necks. 

 Draw. Focus into the neck and make out the canal 



