CONTENTS. 



PAGE. 



Definitions and abbreviations 23 



Results applied to oceanography and measurement of respiration-rate of marine 



organisms 27 



Calibration of an improved indicator method for use on shipboard and in poorly 



equipped laboratories 42 



New apparatus for the electrometric determination of hydrogen-ion concentration 



and for gas analysis 48 



Historical notes 65 



literature list 69 



22 



