ANDREWS: PROTOPLASMIC STREAMING IN Mucor 487 
duration of streaming in each case is shown by the following 
TABLE IV: 
TABLE IV 
Trials| Streamed to | segs etd Still State of Temperature 
sugar when added vacuoles 
I 7 min. — compressed ga” C. 
2 oe 11} min. compressed 24° C. 
3 6 min. compressed age Cy 
4 ro min. compressec aa 
5 | 10} min. mpr 24° C. 
6 3 min. compressed Pe gi Ome 
7 17} min, — compressed 24° C 
8 4 min, compressed 24° C, 
9 124 min, compressed 24° C. 
To 2 min. compressed 4° Cy 
It 6 min. ae compressed 24°'G. 
12 — _—— still 4 sec.; starts} compressed | 24° C. 
with jerk to sugar]. 
solution 
13 8 min. — compressed a 
14 pace 14 min. compressed Cw agg Oe 
very slowly 
15 9} min. mpressed 24° C, 
16 a 12 min. compressed a4? Cy 
17 7 min, compressed Fgh 
18 — 16 min. compressed 24°-G. 
slow . 
19 5 min, —_— compressed 24° C, 
ee rae ee — still 8 min.; starts| compressed 24° G.. 
with jerk to water 
as 2} min. —— compressed 24° C. 
“bd eg 63 min. compressed 24° C. 
23 I min. imei compressed 24°C. 
24 cay 20 min. compressed 24°C. 
SS 
—__! 923 min. 99 min. 
The experiment, as will be noted, was continued about three 
hours. The streaming was always faster to the sugar than to the 
Water. Even an incomplete return of the protoplasm to the 
Water before cessation of movement required a longer time than a 
Complete transfer of all movable contents to the sugar, as is shown 
by the total time required for streaming in either direction. As 
will be seen, the total time the protoplasm was observed to move 
to the sugar during about 3 hours of constant observation was 
92% minutes, while the movement to the water for all the different 
times amounted to 99 minutes, or a difference of 614 minutes. To 
this, as stated above, must be taken into consideration that the 
Streaming to the sugar solution was much faster than to the water. 
