316 Wisconsin Academy of Sciences, Arts, and Letters. 
described by Harper with the exception that no fusion of kino- 
plasmic fibres was observed. 
Olive (1905) finds that the central cell of Monascus described 
by Barker, is the nurse cell. The ascogenous hyphae arise from 
the trichogyne and grow into the central cell and form asci in the 
interior. Schikorra (1909) states that Monascus has paired nuclei 
and nuclear fusion takes place only in the ascus. 
According to Trow (1895) there is no similarity in the develop¬ 
ment of Saprolegnia diviea to that of some of the Ascomycetes 
which have been described. He finds that the fertilized nucleus 
undergoes division into oospores directly after fusion. No nuclear 
division or fusion occurs in the sporangium. In the oogonium and 
the antheridium each nucleus undergoes one reduction before 
fusion. 
Trow (1901) finds that the ooplasm of the mature oogonium of 
Pythium ultimum contains one nucleus, the remaining nuclei pass 
into the periplasm and degenerate. One male nucleus from the 
antheridium fuses with the nucleus in the ooplasm; fusion of the 
nuclei, however, is delayed until the oospore wall is formed. 
Christman (1905) described the process of fertilization in 
Caeoma nitens. Pustules form containing hyphae with short thick 
cells, each cell having a single nucleus. The single nucleus divides, 
the cell elongates and a distal cell is cut off which dwindles in size. 
The basal cell keeps on growing and inclines toward another basal 
cell. Fusion occurs by the formation of a pore in the upper part 
of the adjacent sides making the apical ends continuous. The two 
nuclei lie in the apical end and conjugate divisions follow. Two 
daughter nuclei wander back into their respective cells, but the 
original nuclei remain side by side, move to the distal end and are 
cut off by a cell wall. The cell formed is an aecidiospore mother 
cell which may divide repeatedly. In the paired basal cells the 
process may be repeated. 
Faull (1905) finds that the ascus of Sordaria fimicola does not 
always arise from the penultimate cell, but in many cases from the 
ultimate. In Sordaria humana and Podospora acerina the asci 
arise from the terminal cells of ascogenous hyphae. He holds that 
the ascus is homologous to the zoosporangium of the Oomycetes. 
Faull (1911-12) states that only one nuclear fusion occurs in the 
Laboulbeniales. In Lahoulbenia chaetophora and Lahoulhenia 
gyrinidarium no antheridia are produced. By a series of divisions 
the binucleate ascogenic cells are produced. The ascogenic cells 
