On the Litrameter. 133 
ON THE LITRAMETER. 
ame is derived from the Greek pasion weighs and 
meter, measure; and i Ainaabesiie one of. sheans which 
I have contrived | 
ertainin 
quids are elevated by 
the same__ pressure 
their heights. must be 
inversely. their 
gravi viti 
Two glass tubes, of 
the size and bore usu- 
ally employed in ba- 
made t 
at right angles to, and 
opening into, at 
which connects them. 
At the lower end of 
