772 Wisconsin Academy of Sciences, Arts, and Letters. 
section; in still other instances, however, they appear to form 
small masses of varying size and shape on the surface of the 
sporophore, and in this condition are cut up by means of sur¬ 
face furrows. The close resemblance of the process of cleavage 
in this form to simple constriction, such, for example, as takes 
place in Amoeba or in certain algae and fungi, is particularly 
apparent in the method of cleavage of a thin, filamentous 
strand of the plasmodium, in w T hich furrows come in from op¬ 
posite sides, midway betwen the nuclei, and constrict the fila¬ 
ment into uninucleated pieces. 
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