366 



THE UNFERTILISED EGG AS A 



[PT. Ill 



undeveloped Torpedo ocellata eggs, but none in those of Arbacia, Sepia, 

 or Maia. 



Vladimirov occupied himself with the egg-white in the egg of the 

 bird. In connection with other investigations which dealt with the 



Salmo fonblnalis 



PcGassium 

 Sodium 

 Magnesium 

 Calcium 



Torpedo ocellaba 



Maia verrucosa 



Continuous phase 

 of egg-yolk 



Serum of adult animal 

 Fig. 20. 



water metabolism of the egg (see Section 6-4) he measured the 

 electrical conductivity of the egg-white in the unfertilised ovum, using 

 the Kohlrausch and Holborn apparatus, and obtaining a value of 

 7*6 X io~^. By the aid of a dialysis method he calculated the 

 electrical conductivity of the intermicellar fluid of the egg-white, 

 allowing for the disturbing effect of so large a concentration of pro- 



