Quality of light 
a) Sunlight 
Darkness 
b) Sunlight 
Darkness 
c) Diffused light 
Darkness 
d) Diffused light | 
Darkness 
a) Sunlight 
Darkness 
b) Sunlight 
Darkness 
c) Diffused light | 
Darkness 
d) Diffused light 
Darkness 
a) Sunlight 
Darkness 
b) Sunlight 
Darkness 
c) Diffused light 
Darkness 
d) Diffused light 
Darkness 
Bromine and Sodium tartarate. 
‚ Amount of | 
Time of bromine | Unchanged 
exposure added bromine 
in grams | 
| 
25’ 0.06527 0.01028 
25! 0.06527 0.05735 
40’ 0.12354 0.01832 
40’ | 0.12354 0.10374 
90’ | 0.06527 | 0.01724 
| | 
90’ | 0.06527 0.03542 
120’ | 0.12354 0.02238 
| 
120 | 0.12354 | 0.04834 
Bromine and Citric acid. 
55/ 0.06527 0.02014 
55! 0.06527 0.05912 
Thy 0.12354 0.03975 
15! 0.12354 0.10172 
| 
100’ 0.06527 | 0.02175 
| 
100: | 0.06527 | 0.03487 
140’ 0.12354 0.04203 
140’ 0.12354 0.05875 
Bromine and Sodium citrate. 
45’ 0.06527 0.01012 
45’ 0.06527 0.05035 
80’ 0. 12354 0.01894 
80’ 0. 12354 0.09575 
100’ 0.06527 0.01695 
100’ 0.06527 0.03172 
150’ 0.12354 0.02938 
150’ 0.12354 0.05673 
Volume of solution 
N50 c.c. sodium tar- 
tarate and 10 c.c. bro- 
mine water. 
50) ‘c:c. © sodium tar- 
tarate and 20c.c. bro- 
mine water. 
50) cic: 
tarate and 10c.c. bro- 
mine water. 
a sodium tar- 
5OWcic: © sodium tar- 
tarate and 20 c.c. bro- 
mine water. 
N 
BORE. 5 
and 10 c.c. bromine 
water. 
citric acid 
citric acid 
HORG:c: 5 
and 20 c.c. bromine 
water. 
citric acid 
DORE: 5 
and 10 c.c. bromine 
water. 
N 
50M cic: a; 
and 20 cc. bromine 
water. 
citric acid 
— 
50 c.c. 5 
trate and 10 c.c. bro- 
mine water. 
sodium ci- 
50 cc. 5 sodium ci- 
trate and 10 c.c. bro- 
mine water. 
50itcic: 
trate and 20 c.c. bro- 
mine water. 
= sodium ci- 
50 cc. = sodium ci- 
trate and 20 c.c. bro- 
mine water. 
