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DOUGLAS HOUGHTON CAMPBELL 
foot cannot be distinguished, but the lower part of the stalk is occupied 
by a comparatively large mass of cells (fig. 6, D, h) which are partially 
disorganized, and probably represent the remains of the haustorium; 
but whether all of these cells are derived from the division of the one 
or two primary haustorial cells, could not be determined. 
c 
Fig, 7. A. Median section of a ripe capsule; e, elaterophore; X about 16. 
B. Upper part of the same more highly magnified. The lower cells of the elatero- 
phore are much elongated. C. Foot of a nearly ripe sporophyte; X 60. D. Open 
capsule, showing the two free valves; X about 16. E. Sections of two ripe spores 
and an elater; X about 30b. 
Fig. 6, E, shows the capsule of an older sporophyte. The apex 
forms a decided beak as it does in Blyttia. The sporogenous tissue 
does not yet show an evident difference between the future spore 
mother cells and the young elaters. 
Somewhat later, some of the cells of the sporogenous tissue divide 
