RAPPORT 1903—04 ANNEXE A UAE IVE 
with different water-samples are sent down simultaneously so as to obtain as 
accurately as possibly the differences of compressibility of different waters. 
; The necessary investigation of the apparatus has already been completed 
and a few measurements made in the Kristiania Fjord to test the method, have 
given very satisfactory results. The first actual determinations are just now being 
made in the deepest parts of the entrance to the Kristiania Fjord. 
Arrangements have also been made to have the solubility of Ne, O2 and CO» 
in sea water determined during the coming winter. It is proposed to cover the 
range — 2° to + 30° C and salinity from 0 to 40%oo. The apparatus employed 
will be a modified form of that used by Esrreicuer (Zeit. phys. Chem. XXXI. 
p. 176) in which a known quantity of water is shaken with the gas and the 
ensuing contraction measured. 
Kristiania, July 15th 1904. \ 
FRIDTIOF NANSEN 
