154 
DR. DAUBENY ON THE ACTION OF LIGHT UPON PLANTS, 
Media through which the light 
was transmitted. 
State of 
the 
weather. 
Proportion between 
the whole quantity 
of gas obtained in 
the two jars. 
Proportion per cent, 
between the oxygen 
and nitrogen in the 
two jars. 
Proportion be- 
tween the oxy- 
gen in the two 
jars. 
Proportion be- 
tween the nitro- 
gen in the two 
jars. 
Jar. 1. 
Jar. 2. 
Same as before. 
Bottle No. 7. Filled with 
port wine. 
Exp.l&2. 
Sunshine 
of dif- 
Jar 1 . 100 
Jar 2. No Gas. 
Type 
A 
ferent de- 
grees of 
bright- 
ness. 
r y g b i v 
Jar 1. Same as before. 
Jar 2. Bottle No. 6. Filled with 
the ammonio-sulphate of 
copper. 
Exp. 1. 
Sunshine 
of feeble 
intensity, 
though 
without 
dense 
clouds. 
Jar 1. 100 
Jar 2. 1 8 
0.47 N. 53 
0.37-8 N. 62-2 
100 
14-5 
100 
20-6 
Type 
Exp. 2. 
r y g b i v 
Bright 
and 
cloudless 
sunshine. 
Jar 1. 100 
Jar 2. 49 
0.32-7 N. 67-3 
0.37 N. 63 
100 
55 
100 
46 
Jar 1. 
Jar 2. 
Same as before. 
Glass No. 1. (Green.) 
Exp. 1. 
Bright 
sunshine 
with oc- 
casional 
clouds. 
Jar 1. 100 
Jar 2. 32-8 
0.44 N. 56 
0.34-7 N. 65-3 
100 
26 
100 
38 
Exp. 2. 
Sunshine, 
for the 
most part 
bright. 
Type 
/^\ 
Jar 1 . 100 
Jar 2. 25 
0. 34 N. 66 
0.26-7 N. 73-3 
100 
18 
100 
25-6 
r y g b i v 
Exp. 3. 
Sunshine 
feeble and 
inter- 
mitting. 
Jar 1. 100 
Jar 2. no gas 
collected. 
The second series of experiments undertaken was with the leaves of the Salicornia 
herbacea, and the following were the results obtained. Temperature 65° Fahr. 
Media through which the light 
was transmitted. 
State of 
the 
weather. 
Proportion between 
the whole quantity 
of gas obtained in 
the two jars. 
Proportion percent, 
between the oxygen 
and nitrogen in the 
two jars. 
Proportion be- 
tween the oxy- 
gen in the two 
jars. 
Proportion be- 
tween the nitro- 
gen in the two 
jars. 
Jar 1 . 
Transparent glass .... 
Feeble 
Jar 1 . 
100 
0. 25 
N. 75 
100 
100 
Jar 2. 
No. 5. Glass (Orange). . 
sunshine. 
Jar 2. 
67 
0. 16-4 
N. 83-6 
44 
75 
Jar 1. 
Transparent 
Feeble 
Jar 1. 
100 
0. 10 
N. 90 
100 
100 
Jar 2. 
No. 4. (Red) 
sunshine. 
Jar 2. 
60 
0. 0 
N. 60 
0 
665 
Jar 1 . 
Transparent 
Feeble 
Jar 1. 
100 
0. 25 
N. 75 
100 
100 
Jar 2. 
No. 3. (Blue) 
sunshine. 
Jar 2. 
20 
0. 0 
N. 20 
0 
26-7 
