Physiology of Regeneration 619 
TABLE XI 
Effect of Alcohol 
August 21 to August 31 (1908) 
| 
ALCOHOL IN SEA-w. CONTROL (sEA-w.) | ALCOHOL IN SEA-W. 
I 3 10,000 I 3 20,000 
Number of segments 
Old Regenerated | Old Regenerated Old Regenerated 
18 2 | 16 3 14 4 
16 a | 18 4 | 16 4 
17 3 17 4 18 4 
16 4 16 4 19 4 
16 4 18 4 18 4 
16 4 15 4 17 5 
18 4 18 4 16 5 
18 4 15 4 17 5 
18 4 18 4 20 5 
17 5 15 5 
16 i 
17 5 
18 5 
17 6 
Av. 17 3.6 16.8 4 17 4-7 
3 to 5, while the same varies in the strong solution of alcohol 
from 2 to 4, and in the weaker solution from 4 to 6. The inhib- 
iting effect of the stronger solution and the stimulating effect of 
the weaker upon the rate of regeneration are obvious from the 
experiment. But the difference in favor of those worms that 
were subjected to the influence of the weaker alcohol could be a 
good deal better appreciated by actually examining the animals 
than by merely counting the number of segments. Two weeks 
later the worms were inspected once more and it was found that 
while those in the control had regenerated from 7 to 9 new seg- 
ments, those in the weaker solution of alcohol (1 : 20,000) had 
regenerated from 8 to II new segments. 
It is known to physiologists that alcohol in moderate doses 
augments the activity of protoplasm, and the results of these 
experiments conform in general with this physiological fact. 
