1903-4.] The Viscosity of Aqueous Solutions of Chlorides, etc. 235 
Table IY .—Hydrochloric Acid. 
Temp. 
Mol. per 
litre. 
Density. 
Viscosity. 
Viscosity of 
Water. 
0° 
1 
1-0160 
1-020 
1-000 
2 
1 -0327 
1-041 
3 
1-0489 
1-059 
15 
1 
1-0144 
0-667 
0-640 
2 
1-0303 
•695 
3 
1-0454 
•725 
25° 
1 
1-0123 
•529 
0-501 
2 
1-0278 
•557 
3 
1-0426 
1 
•585 
Table V. — Hydrobromic Acid. 
Temp. 
Mol. per 
litre. 
Density. 
Viscosity. 
Viscosity of 
Water. 
0° 
1 
1-0530 
0 987 
1-000 
2 
1-1052 
•970 
3 
1T540 
•962 
I 
15° 
1 
1-0512 
•650 
1 
0-640 
2 
1-1020 
•657 
3 
1T495 
•671 
25° 
1 
1-0489 
•514 
0-501 
2 
1-0990 
•529 
3 
1-1460 
•544 
Results. 
In the first place, it may be pointed out that the value we have 
obtained for 1 n KC1 solution at 25° is slightly greater than the 
viscosity of water at that temperature, whereas it is generally 
stated to he less than water ; the value for 17*6° C. (interpolated 
between 15° and 25°) agrees extremely well with that given by 
Arrhenius. A certain amount of confusion has arisen regarding 
