1904 | HOLFERTY: ARCHEGONIUM OF MNIUM 125 
Fig. 24. Archegonium showing division of third canal initial and rapid 
increase in size of the central cell; basal work of terminal cell apparently 
closed 
Fic. 25. Archegonium showing axial row affected by method of ‘paibeed 
eral segment cutting (see fig. 237); work of terminal cell not finished; 
venter double walled, pedicel very massive. 
FIGs. 26-29. Venters after recent division of the central cells; eggs and 
ventral canal cells of nearly equal size; egg cells showing masses of chro- 
matin thrown off into the cytoplasm — an occurrence quite common for eggs, 
less so for ventral canal cells; evidences of a row below the egg in figs. 
26-28, 
Fig. 30. Tip of a mature archegonium, showing that last divisions in 
both neck and axial row have been intercalary, aes 
1G. 31. Venter with egg and ventral canal cell; lowest canal cel pe 
ing showing that intercalary growth takes place after the cutting off o 
ventral canal cell. f 
IGS. 32-33. Young archegonia with remarkably large canal eae 
tral cells not yet divided; intercalary divisions taking place in last : s “ 
the axial rows; both mitotic figures show bodies resembling centrosphere 
basal segment cutting of apical cells completed. 
: 4. Egg oe jana canal cell, and seven canal cells; i age 
of Seateal cell found earlier; upper canal cell appears to be produce i 
terminal cell; longitudinal division of terminal cell prevents sane ee 
Segment cutting ; intercalary growth of neck in progress as shown by m 
figures; venter double-walled to an unusual distance above thee St os 
G. 35. Young archegonium slightly abnormal, showing beginning 
two axial rows near apex. 
FIG, 36. Part of neck of anold archegonium, showing two axial rows for 
a short distance. 
FIG. 37. Tip of an abnuvinad archegonium having two axial rows, each 
with its own apex and apical cell. 
FIG. 38. ae BE modified by the possession of ect aan 
charagters: the members of an evident axial row are separated by ee sae 
walls ; these cells dividing to form two rows; the double wall in peas 
part and the two undivided large cells opposite to it are . oe 
Specimen might have produced a bisexual organ of the nature 0 
in oO : H 
ie : G. 39. Young antheridium further advanced ; the double axial row with 
transverse walls are archegonium characters. - 
Fig. 40. A bisexual ae with evident arehegonial ae 
characters; the egg, ventral canal cell, and adjacent canal cells; Gem 
to form a double-walled venter; the elongated pedicel and the ale anes 
are undoubted archegonial characters; the oblique and irregular p 
