498 Arthur . — The Movement of 
separating two branches, the larger vacuoles are generally 
bisected, a part of each going to the right and a part to the 
left. When one stream flows into another, it frequently 
Fig. 3. The current from a branch is rushing into a long vacuole in the main 
hypha. Further along the main hypha, the protoplasm is pushing into and through 
a large vacuole (only partly shown), owing to an acceleration of the current. 
Fig. 4. Portion of a highly vacuolated hypha with the protoplasm in motion, 
a just before, b just after, a change in direction of the current. 
plunges into the midst of large passing vacuoles, and disrup- 
tures them. When a part increases its speed over the part 
immediately preceding, better progress is made by pushing 
