VI 



CHONDRTOSOMES 



TOO 



by the spermatozoon. More serious perhaps is the fact that these egg 

 chondriosomes may be very unevenly distributed amon^^st the bla^tomeres 

 in cleavage (Duesberg, 1915). An unequal distribution of the chondrio- 

 somes may be brought about experimentally in Hydractinia (Beckwith. 

 1914) by centrifuging the egg. .This does not prejudice the normal 

 development of the larvae. 



The persistence of the chondriosomes which are undoubtedly present 



Fig. 83. 



'''I! ihSdS^oml a1par,t.B ; *, head (nucleus) of spermatozooD. 



in the fertilized egg and embryo, and their development "'to certain 



pecific cell struetures of the adult, espeeially into ■-"-'''^";"J 



muscle fibriUae, have been described by Meves (1908) and On sbe g 



(IQIO) for the chick, and also for some mammals. Accordmg to Arnold 



(1912) they give rise to the zymogen granules in the pancreab. 



