CONTENTS 



THREE DECADES PROGRESS IN MICROBIOLOGY 369 



Lecture held on May 8, 1946, for 'Danmarks Naturvidenskabelige 

 Samfund' and the 'Biologisk Selskab' after the 'Emil Chr. Hansen Medal' 

 had been conferred on him. 

 Antonie van Leeuwenhoek 13, /, 1947. 

 Naturens Verden 30, 161, 1946. 



HOMO MILITANS 393 



Address delivered in the Dutch language at the general meeting of the 



Hollandse Maatschappij der Wetenschappen on May 22, 1948, under the 



title 'Homo militans'. 



Translation of: 'Homo militans'. 



Haarlemse Voordrachten VIII. Haarlem 1949. 



HOMO MILITANS 416 



Voordracht gehouden in de Algemene Vergadering van de Hollandse 

 Maatschappij der Wetenschappen op 22 Mei 1948. 

 Haarlemse Voordrachten VIII. Haarlem 1949. 



MICROBIAL METABOLISM AND ITS INDUSTRIAL IMPLICATIONS 424 



Read before the inaugural meeting of the Microbiology Group of the 

 Society of Chemical Industry in the Royal Institution, on March 7, 1951. 

 Chemistry and Industry p. 136, 1952. 



AN ASPECT OF THE PROMOTION OF SCIENCE 473 



Address delivered at the 90th annual meeting of the National Academy of 

 Sciences, in Washington, D.C., April 28, 1953. Kluyver represented 

 the Royal Netherlands Academy of Sciences on this occasion and deliv- 

 ered this address as guest of honour at the annual dinner. 

 News Report, National Academy of Sciences-National Research Council, U.S.A., 

 3> 33, !953- 



SOME ASPECTS OF NITRATE REDUCTION 483 



Introduction - General considerations on true dissimilatory nitrate 

 reduction - Fate of the hydrogen acceptor - Fate of the hydrogen 

 donator - Molecular hydrogen as hydrogen donator - The influence 

 of free oxygen on nitrate reduction. 



Lecture delivered at the 6th Congress for Microbiology held at Rome 

 in September 1953, as part of the Symposium on Microbial Metabolism. 

 Symposium Metabolismo Microbico, Istituto Superiore di Sanitd. Roma, 1953. 

 p. 71. 



