1359 
C. Permang anale and Citric acid. 
N . . . ^ N 
1) 10 c.c. — citric acid and 5 c.c. — KMnO^ ; colour disappears 
5 10 
after 
Snnlight Diffused ligiit Darkness 
3'_40" 5'— 45" 13'. 
N 
Then 5 c.c. — LMnO^ added in each of the botlles ; colour dis- 
appears after 
5'— 20" 
11'— 30" 
N N 
2) 5 c.c. Y citric acid and 5 c.c. — KMnO^ ; colour disappears 
after 
2'_35" 4'— 55" 12'— 45". 
D. Permang anale and Malie acid. 
N N 
1) 10 c.c. Malie acid and 10 c.c. — KMnO^; colour disappears 
after 
Sunlight Diffused light Darkness 
6'_10" 10'— 15" 28' 
iV JV 
2) 10 c.c. — malie acid and 3 c.c. — KMnO^; colour disappears after 
Sunlight 
3’— 5" 
Diffused light Darkness 
5'^10" 9'— 20". 
E. Permanganate and laclic acid. 
N N ^ 
1) 10 c.c. — lactic acid and 7.5 c.c. — KMnO^ ; colour disappears 
after 
8'— 40" 
25'— 13" 
54' 
N N 
2) ,10 c.c. ~ lactic acid and 13 cc.c. —KMnO^; colour disappears 
after 
10 '— 10 " 
30'— 15" 
61' 
F. Permanganale and Malonic acid. 
N N 
1) 20 c.c. — Malonic acid and 5 c.c. — K Mn 0^ ; colour disappears 
5 10 
after 
