Miyake, The development of the gametophytes etc. 25 
Fig. 109. Longitudinal section of a free nucleated prothallium, shortly 
before wall-formation. From the same preparation as fig. 50. 
Fig. 110. Longitudinal section of upper part of a female prothallium, 
showing young archegonial complex; archegonial chamber is not yet formed. 
In upper part of nucellar cap a pollen-tube with a dark body, probably the 
body cell, is seen. 
Fig. 111. The same in a later stage; tip of apollen-tube with body-cell 
is found in archegonial chamber. 
Fig. 112. Upper part of a mature egg, showing the egg-nucleus and a 
part of the vacuole. 
Fig. 113. Conjugating sexual nuclei. 
Fig. 114. Spindle of first division of fertilized nucleus. 
