BIOGRAPHICAL MEMORANDA 



with the bacteriological control of the drinking water which was 

 supplied by that city, while Mrs. Kluyver had an important share in 

 locating shelter for the refugees who had come from there. 



The laboratory garden was used for the cultivation of potatoes, peas, 

 beans, and, not to be forgotten, tobacco. The scarcity of the latter 

 product hit Kluyver particularly hard, and it must have been a great 

 satisfaction to him that he could at least apply his knowledge of the 

 tobacco fermentation in a directly useful manner. 



Agar could, of course, no longer be obtained from abroad. This 

 served as a natural impetus to examine more closely the potentialities 

 of silica gel as a substitute. Furthermore the bacteriological manufac- 

 ture of lactate, used as an additive to fodder, was taken in hand in 

 view of a threatening depletion. 



But in addition Kluyver still managed to devote his attention to 

 dissertations and publications that were in preparation. During this 

 time the sixth volume of Beijerinck's 'Collected Works' was completed, 

 as also the section for the Dutch 'Textbook of General Botany' which 

 he wrote in collaboration with Wassink, and a few papers that were pub- 

 lished in 'Antonie van Leeuwenhoek', in English. He also contributed 

 much to the writing of the second volume of the classification of the 

 non-ascosporogenous yeasts. 



The cares weighed too heavily, however; no longer could a preoc- 

 cupation with such activities bring solace. It was only through his iron 

 sense of duty that he could bring himself to perform them, and even so 

 the tempo was greatly reduced during these years. The device of Wil- 

 liam the Silent, 'Point n'est besoin d'esperer pour entreprendre, ni de 

 reussir pour perseverer', which he had many a time held up before 

 his pupils, now had to serve as an inspiration to himself as well. 



Kluyver's loyalty towards his country was equalled by that which 

 he experienced towards what were then the Dutch East Indies. During 

 his early years as a scientist he had been so profoundly impressed by 

 this country that the Japanese occupation of this realm shocked him 

 greatly. And his attachment to the Technological University, where 

 he had been a student and later a professor for so many years, caused 

 him to suffer as a personal attack the measures of the occupation forces 

 against the Dutch universities. The dismissal of Jewish professors by 

 the Nazis, later followed by the deportation of students who had re- 

 fused to declare their loyalty to the occupant, almost completely lamed 



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