i900) CELL AND NUCLEAR DIVISION IN FULIGO VARIANS 227 
for any great distance in an unbroken plane or curve. The fur- 
tows which are to further subdivide the segment represented in 
fig. 5 have been formed independently of those by which the 
block itself was delimited. The plan seems to be that each fur- 
fow may cut through the mass in which it originates, but may 
fot continue across the furrows with which it intersects so as to 
cut through successive masses in any specific direction. There 
ae no general planes of cleavage for the whole mass. As noted 
already, the first furrows that form do not asa rule cut deep | 
down into the mass toward a center. Rather they branch or are 
curved so as to cut off irregular blocks on the surface. © New 
furrows forming on the surface of these, and at very varying 
angles with them, continue the cleavage into the deeper portions 
of the mass, 
: is well shown in fig. 5 that the furrows at this stage also 
ae into a perfectly undifferentiated mass of protoplasm, there 
being absolutely nothing by which to predict the path they will 
take except the general direction which they have already 
a. 0 The protoplasm: is singularly homogeneous, 
this i vacuoles or inclusions of any sort, and through 
further © ce aabaie mass these furrows are formed. It is 
Various angle a they may be either plane or curved, and lie at 
~:, © > With each other and the surface of the mass. 
a to eile results in no ‘ee definite conditions 
When the Saar pemients formed. Still we can find a stage 
uninucleated oo segments of the mass are quite regularly 
Mensions nA the deeper portions have been cut to vanoue 
far the ies. containing from eight to sixteen nuclei. So 
at this ad esembles that already described for Synchitrium ; 
division tg a very noticeable difference nr the method of 
ey. ... = con This difference is shown in figs. 
tiation Of the - itherto, there has been absolutely no differen- 
. Cleavage “eee otoplasm to mark the path to be taken by the 
between each ae nOW: broad hyaline areas are formed midway 
: line zones of 6d dividing nuclei. These are not at all hya- 
: €qual thickness, but furrows broader at the surface 
oe 
