On the proportions of organic derivatives in sea water and their relation to the composition of plankton / A.C. Redfield -- Organic catalysts or enzymes in sea water / E. Kreps -- Distribution of dissolved oxygen in the North Pacific Ocean / T.G. Thompson, B.D. Thomas, and C.A. Barnes -- Die Verteilung des Salzgehaltes im Oberflächenwasser der Ozeane / G. Schott -- Über die Bedeutung von Bodentemperaturmessungen für die ozeanographische, morphologische chemische und geologische Erforschung der Tiefsee / G. Wüst -- The Sognefjord section : oceanographic observations in the northernmost part of the North Sea and the southern part of the Norwegian Sea / B. Helland-Hansen -- Periodical variations in temperature and salinity in the Straits of Gibraltar / J.P. Jacobsen and H. Thomsen -- La marée interne / O. Pettersson -- Gedanken über interne Gezeitenwellen / A. Defant -- On the distribution of tides over an element of the sea / J. Proudman -- On methods for fitting curves to observations / H.J. Buchanan Wollaston -- Sulla propagazione delle radiazioni solari attraverso l'acqua / F. Vercelli.