1665-1728
John Woodward reported in 1699 on the results of an experiment in which he grew garden
mint in
various types of water.
He concluded that "vegetables" are not formed from water alone, but rather
from certain earthy
material. This material must be present in all waters, as plants grew in all the waters he tested.
|
Origin of the
water
g
|
weight
of plants
|
Weight
increase during
77 days
g
|
Water consumption
Transpiration)
g
|
Relation beztween
Weight Increase and
water comsumption
g/g
|
|
at planting
g
|
at harvest
g
|
|
Rain
|
1.8322
|
2.9673
|
1.1351
|
194.84
|
1
: 171.66
|
|
River
Thames
|
1.8151
|
3.5024
|
1.6864
|
161.70
|
1
: 95.96
|
|
Hyde Park
Canal
|
7.1346
|
16.1502
|
9.0155
|
8505.74
|
1
: 94.34
|
|
H P Kanal
+ 42,45 g
garden soil
|
5.9671
|
24.3874
|
18.4202
|
969.66
|
1:
52.64
|
Nach Russel, 1936,
S. 3
