6-2 

 TABLE II. 



Temperature. 



Duration of 

 measurements 



Rise of level 

 in mm. 



Rise of level 



in mm. 



per hour 



68.0 

 75.0 

 72.0 

 70.0 

 69.5 

 69.5 



2'/3 



IV2 



5V4 



58 

 31 



— 15 

 + 46 

 + 14 

 + 10 

 +243 



— 36 



At conMaiit temperature (69°. 5) the direction of motion of the 

 meniscus has chanj^cd. This change proves that also in this case 

 there are more tiian two modifications present at the same time. 



5. How extraordinarily marked the retardations are wliich may 

 occur, is shown by the behaviour of a sam|)le Cujv (comp. § 7 of 

 oui' first paper); it was not possible to "bring it into motion" even 

 after treating it with a sohition of copper sidphate. However, it 

 ought to be pointed out that there was no finely divided powder 

 present, which was the case with the other samples we investigated. 



Utrecht, April 1914. van 't Ro¥¥- Laboratory. 



Botany. — "Ent'n/i/ trans formations during the germination oj 

 u'} ie< it-grains \ ^)' Lucie C. Doykr. (Communicated by Prof. 

 F. A. F. C. Went). 



(Communicated in the meeting of April 24, 1914). 



The reserve materials of seeds represent a large quantity of che- 

 mical energy. In germination these substances are split into com- 

 j>ounds with a much smaller number of atoms and partly by the 

 process of respiration completelj' oxydized to cai'bon dioxide. In 

 consequence of these exothermic processes a considerable quantity of 

 energy is set free, which can be used for tlie various vital- 

 processes. 



In order to obtain a conce|)tion of these transformations of energy 

 during germination, 1 have made some observations on germinating 



