ZOOLOGY: L. R. CARY 
709 
slower reactions, slower coordinated movements, less sensitiveness to 
stimulation and an increase in pulse rate. The memory and word reac- 
tions, as in the earlier results, were improved after the alcohol. 
Some attention should be given to the fact that in Period 6, and to 
a less extent in Period 5, in Sections I and II of the table, the signs are in 
the majority of cases the opposite of those in Periods 2 and 3 for similar 
measurements. This means a superior performance and is in contrast 
to the earlier condition of general depression. There are some indi- 
cations in the data previously published that this facihtation following 
the alcohol depression may not be a peculiarity of Subject VI, but a 
characteristic phenomenon of the alcohol effect. 
^ Dodge and Benedict, Psychological effects of alcohol, Carnegie Inst. Washington, Pub. 
232, 1915; these Proceedings, 1, 605 (1915). 
2 For family and personal history see Dodge and Benedict, op. cit., p. 277. 
' Rivers, The influence of alcohol and other drugs on fatigue, London, 1908. 
THE INFLUENCE OF THE MARGINAL SENSE ORGANS ON 
METABOLIC ACTIVITY IN CASSIOPEA XAMACHANA 
DEPARTMENT OF BIOLOGY. PRINCETON UNIVERSITY, AND DEPARTMENT OF MARINE 
BIOLOGY, CARNEGIE INSTITUTION OF WASHINGTON 
Received by the Academy, November 20, 1916 
The results of my earlier studies^ have shown a marked influence of 
the marginal sense-organs on the rate of regeneration in Cassiopea, 
when halves of the same specimen are used for comparison. Further 
experiments on regeneration have confirmed these results, and have 
shown that when two halves of any medusa disk are subjected to the 
same operation the amount of regeneration from the two halves is 
identical in extent within the limits of error of measurement employed 
Since the influence of the sense-organs on the rate of regenerations is 
most marked in the earher stages of any experiment, several series of disks 
were (1) separated into halves, and (2) the sense-organs were then re- 
moved at different intervals of time after the first operation as shown in 
the following table: 
BIGELOW 
By L. R. Gary 
TABLE 1 
Series No. 
First operation 
Disk cut into 3 half 
disks 
Second operation 
S. 0. removed from 
one-half disk 
Result 
1 
2 
3 
4 
5 
9.45 a.m. July 22 
8.00 a.m. July 24 
7.15 a.m. July 25 
8.00 a.m. July 25 
7.00 a.m. July 26 
7.00 a.m. July 23 
7.00 p.m. July 24 
8.00 a.m. July 26 
4.00 p.m. July 25 
8.00 a.m. July 27 
Half with S. O. fastest 
Half with S. O. fastest 
Reg. equal 
Half with S. O. fastest 
Reg. equal 
