Germination and by Electrical Response. 185 
In Table II the average results of five sets of experiments carried out 
at different times are tabulated : 
Table II. 
No. of Average electrical response in volts, strength 
Direction 
No. 
embryos and direction of shock being given at head 
Date. 
tested . 
of columns. 
response. 
+ 1,000 
— 1 ,000 
+ 10,000 — 10,000 
units. 
units. 
units. units. 
1. 
10 0*0023 
0*0019 
0*0074 0*0018 
April 9 
all + 
2. 
10 0*0051 
0*0032 
0*0033 0*0005 
„ 12 
a few — 
3- 
IO 0*0020 
0*0017 
0*0039 0*0002 
„ H 
all + 
4. 
IO 0*0021 
0*0016 
0*0059 0*0013 
» *9 
a few — 
5 * 
IO 0*0020 
0*0013 
0*0033 0*0004 
„ 22 
all + 
Table II. — Average responses of embryos of Hordeum vulgare dissected from the 
grain after 
germinating for 30 hours on filter-paper soaked 
in distilled water at a temperature of 22 0 
C. to 25 0 C. 
Average germination value = 85 %. 
Table III. 
Electrical response in volts. Strength and direction of shock at head of columns. 
+ 1,000 
— 1 ,000 
+ 10,000 
— 10,000 
units. 
units. 
[units. 
units. 
+ 0*0009 
+ 0*0004 
+ 0*0036 
0 
+ 0*0021 
+ 0*0025 
+ 0*0035 
0 
+ 0*0035 
+ 0*0040 
+ 0*0030 
0 
+ 0*0040 
+ 0*0028 
+ 0*0050 
+ 0*0011 
+ 0*0000 
0 
+ 0*0008 
+ 0*0008 
+ 0*0028 
+ 0*0017 
+ 0*0066 
0 
+ 0*0007 
+ 0*0011 
+ 0*0030 
0 
0 
0 
+ 0*0040 
0 
+ 0*0070 
+ 0*0045 
+ 0*0085 
+ 0*0005 
0 
0 
+ 0*0017 
0 
experiments: — +0-0021 
+ 0-0017 
+ 0 0039 
+ 0-0002 
Table III. — Electrical responses of io embryos of Hordeumvulgare after treatment for 30 hours 
with distilled water. 
Temperature = 
22 0 to 2 5 0 C. 
Germination value 
= 8 5 %• 
Table 
IV. 
'Response in volts. 
Strength and direction of shock at head of columns . 
+ 1,000 
— 1 ,000 
+ 10,000 
— 10,000 
units. 
units. 
units. 
units. 
1. 
+ 0*0020 
+ 0*0020 
+ 0*0033 
+ 0*0013 
2. 
0 
0 
0 
0 
3 * 
+ 0*0030 
+ 0*0020 
+ 0*0060 
0 
4. 
+ 0*0027 
+ 0*0008 
+ 0*0080 
0 
5 * 
+ 0*0150 
+ 0*0125 
+ 0*0025 
0 
6 . 
— 0*0060 
— 0*0030 
— 0*0020 
— 0*0010 
7 * 
+ 0*0083 
+ 0*0050 
+ 0*0025 
— 0*0012 
8 . 
+ 0*0100 
+ 0*0050 
+ 0*0050 
— 0*0020 
9 * 
0 
0 
0 
0 
10. 
Average of ten 
+ 0*0044 
+ 0*0020 
+ 0*0037 
0 
+ 0*0051 
+ 0*0032 
±0*0033 
+ 0*0005 
experiments : — 
Table IV. — Electrical responses of embryos of Hordeiim vulgare after treatment for 30 
with distilled water. 
Temperature =3 
2 2° tO 2 5° C. 
Germination value 
* 85 %. 
Tables III and IV are given as examples of the detailed experiments. 
It is noticed that the responses in Table III are all in the same positive 
direction. The responses in Table IV are also generally in this direction, 
but occasionally the direction changes to negative. 
