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GRACE A. DUNN 



Fig. 2, L. Metaphase, centrosomes are present. X 700. M. Telophase. X 

 1000. N. Unicellular, binucleate tetrasporangium. X 1000. O. First cleav- 

 age furrow just being formed in tetrasporangium. Protein granules are present. 

 X 1000. P. Longitudinal section of a two-celled tetrasporangium, showing 

 attachment to subcortical cell and a portion of the jacket of sterile cells. Chro- 



