Il. The 
J. P. DALTON. ‘Researches on the Joule-Kelvin effect, especially at low temperatures. 
Joule-Kelvin effect for air at 0° C and at pressures up to 42 atmospheres,” 
Ee) 
Er 
Te a. 
Ze 
00000000000000000G00000 
Proceedings Royal Acad. Amsterdam. Vol. XI. 
