Freshwater Life in North-East Greenland. 337 



from the bottom of the deeper water where they have hibernated); 

 a small individual can then be seen swimming away from under 

 the large, where it has probably sought protection; of any care of 

 the fry there can scarcely be any talk at this stage. The first, larger 

 Apiis met with by the banks, when the ice melts here in early 

 summer, are young individuals (end of June); only later (middle 

 of July) do we find the full-grown animals ; in both cases, however, 

 these are animals which have hibernated, instead of dying off like 

 many of their fellows in the autumn, and their numbers on their 

 reappearance in the spring contribute essentially to the occurrence 

 of the species year by year. So far as I could see, the eggs and 

 metanauplii are far too few in numbers (compare also the already 

 mentioned delicateness and slight tenacity of life of the latter), to 

 be able alone to account for the abundance of the species from 

 year to year. 



29. 6. 1911 



24* 



