PLATE I. 
Apparatus for Determining the Carbonic Acid in Sea-Water. 
A. — Decomposition-flask. 
B, B. — Air-gasometer. 
C. — Inverted condenser. 
I). — Evacuated flask, charged with known volume of standard baryta water. 
D, E, F shows liow standard hydrochloric acid is run into D, out of a burette at the end 
of the experiment. 
