20 BOTANICAL GAZETTE [JULY 
Fic. 59.—Eighteen neck canal cells, ventral canal cell, and egg; eleventh 
and twelfth neck canal cells in division. 
Fic. 60.—Twenty neck canal cells and ventral cell; fifth and sixth neck 
canal rolls | in division; peripheral cells showing intercalary divisions. 
Fic. 61.—Thirty neck canal cells, ventral canal cell, and egg; 2 uppermost 
neck canal cells in division; cover shows 3 segments in median longitudinal 
section. 
Fic. 62.—Forty-three neck canal cells, ventral canal cell, and egg; cover 
shows 3 segments in median longitudinal section. 
Fic. 63.—Cross-section of venter of mature archegonium at level of egg, 
shoeing variable number of cells in thickness 
PLATE VII 
Fic. 64.—Terminal portion of an archegonium approaching maturity with 
the 10 neck canal cells in simultaneous division 
Fic. 65.—Terminal portion of an piegentant aistesching maturity 
showing marked enlargement of canal and multiple condition of canal row. 
Fic. 66.—Middle portion of neck of an archegonium showing multipli- 
cation of neck canal cells. 
Fic. 67.—Lower portion of an archegonium nearly mature showing 3 neck 
canal cells in simultaneous division. 
Fic. 68.—Lower portion of an archegonium rears mature demsine 
bes less of canal cells; ventral canal cell and egg almost equal in size. 
16. 69.—Series of t aigeecinian sections through terminal portion of a 
ZO ig Itipl condition of neck canal row. 
_ PLATE VIU 
fo 7JO- —Venter with: 3 cells, 2 lowest are probably eggs; uppermost is 
‘ral canal cell. 
eS Fic. 71.—Double archegonium. 
: Be. 72.—Serial sections through ciphies ‘putt of an es contain- coe 
ing 35 neck canal cells, ventral canal cell and egg; section A shows in cover 
- ine primary division wall; 2-2, quadrant division; and further division a 
o Fie. 73.—Serial sections through middle portions of neck of same ® arche- 2g 
co Fic. 74.—Serial sections through lower v - portion Paste ab ae 
Ae ‘ingt hick: —— (lob) water at love of venta aa el (3) 
| eter at evel of xs 
