185 
The following table gives the results of all the experi- 
ments : — 
TABLE I. — Gteowth of Mustard. 
No. 
Conditions 
of 
growth. 
Number 
of 
days of 
growth. 
l 
Loss or gam 
per cent., 
after drying. 
Remarks. 
1 
2 
None 
In Light, town’s 
None . . 
— 12 
The seed was crushed and 
moistened, before drying. 
water and air only 
8 
— 22-5 
Plants £in. long, green leaves, 
just emerging. 
3 
4 
Ditto 
In Light, distilled 
10 
— 29 ‘8 
Plants l£in. long, strong and 
healthy. 
water used ...... 
14 
— 26-7 
Small amount of growth, 
about Hin. 
5 
6 
Ditto 
In Darkness, town’s 
17 
— 37'9 
Stalk and leaves about 2in. 
long, strong and healthy 
water and air only 
10 
— 27‘8 
Etiolated but strong plants, 
about 2in. in length. 
7 
Ditto 
13 
— 40 
Plants very weak, about 2£in. 
to 3in. in length. 
8 
Ditto 
17 
— 
Length of plant about 4in., 
dead and decomposed. 
These results show that during the germination and early 
growth of mustard, Professor Draper’s statement does not 
hold good : — 
1. In every case, whether in light or darkness, the plants 
(root, seed, stem and leaves) when dried had lost a certain 
amount of solid matter. 
2. Up to the period of cultivation observed, the amount 
of loss was in close relation to the degree of growth. 
3. Up to a certain stage of growth, there is but little 
difference in the extent of loss in the light or in the dark. 
These experiments were afterwards repeated with the 
bulbs of hyacinth, crocus, and snowdrops ; and at different 
periods kidney-beans and peas were grown in garden mould, 
carefully washed and dried after growth, and tested in the 
same way. It was found that peas and beans began to 
gain in weight when the plants were from Sin. to 12in. in 
height. 
The results with the bulbs are given in tables II.. III., 
and IV. 
