192 
Dr. Thomson on some of 
It has a smell of chlorine fully as strong and as disagree¬ 
able as chlorine gas itself. 
It reddens vegetable blues. 
Its specific gravity at 50°, was 1-91 si-; but its extreme 
volatility makes it rather difficult to estimate the specific gra¬ 
vity with very great exactness. 
When dropt into water it falls to the bottom, and exhibits 
the appearance of a drop of oil. Globules of chlorine gas 
issue from it rather copiously. This evolution continues till 
the red liquor dissolves in the water, forming a yellow-coloured 
mass, which contains muriatic acid, chromic acid, and a little 
green oxide of chromium. 
151*5 grains of the red liquor were poured into about an 
ounce of water. The temperature rose at once to 212°, and 
chlorine gas was given off in such abundance as to occasion 
an effervescence. 
When the red liquid is dropt upon oil of turpentine, much 
heat is evolved and the oil catches fire, and burns with a 
lively flame, but having more of the blue tint than is usual 
with the flame of that oil. After the combustion, we find 
green oxide of chromium mixed with vegetable matter from 
the oil of turpentine. 
When dropt into alcohol, even of a specific gravity not 
lower than 0*840, it sets it on fire. The combustion goes on 
tranquilly, the flame is lively, and has a beautiful bluish 
white colour. 
When the red liquid is poured on flowers of sulphur, a 
pretty violent action takes place. After a few seconds the 
sulphur catches fire, and burns with a fine red flame. 
When we drop it into olive oil, a violent action takes place; 
