( 115) 



provisionally to ascertain whether cells, the nucleus of which con- 

 stitutes the main mass, would conduct themselves like those we had 

 examined. An excellent subject happened to present itself viz. imma- 

 ture spermatozoa of the frog; only a few stirred. 



We see therefore, that the spermatozoa give nearly the same 

 cipher as the blood-corpuscles of the frog. 



In how far a correspondence will prove to exist between tiie 

 quantative proportion of protoplasma and intracellular fluid in different 

 cells of one and the same individual, we shall have to learn from 

 fui'ther researches. 



Conclusion. 



1. Besides the red blood corpuscles, the white and the spermatozoa 



