194 
Standard diffusion, 1’2 cub. c. in 500 cub. c. of water, 
length of column, 21*2. 
Expt. I. — Comparison diffusion contains 1*8 cub. c. in 
500 cub. c. 
ABC 
1435 16-35 15-25 
A second trial gave 
ABC 
D 
14-13 
D 
12-65 14-65 13-65 14-13 
Expt. II. — Comparison diffusion contains 2-4 cub. c. in 
500 cub. c. 
A B C D 
10-6 11-25 10-93 10-6 
Expt. III. — Comparison diffusion contains 3-0 cub. c. in 
500 cub. c. 
A B C D 
8-4 9-25 8-83 8-48 
Expt. lY. — Comparison diffusion contains 3-6 cub. c. in 
500 cub. c. 
A B C D 
6-85 7-6 7*22 7‘07 
Expt. Y. — Comparison diffusion contains 4-2 cub. c. in 
500 cub. c. 
A B c D 
5-6 6-1 5-85 6-06 
Expt. YI. — Comparison diffusion contains 4-8 cub. c. in 
500 cub. c. 
A B C D 
5-1 5-55 5-32 5-3 
Expt. YII. — Comparison diffusion contains 5-4 cub. c. in 
500 cub. c. 
A B C D 
4-1 4-5 4-3 4-71 
On another occasion I got a nearer result, as follows : 
A B C D 
4-7 4-95 4-82 4-71 
Expt. YIII. — Comparison diffusion contains 6 cub. c. in 
500 cub. c. 
