SUMMARY OF YOLK FORMATION 



151 



King . 



1926 Oniscus 



Gardiner 



Gresson 



Hibbard 



Voinov 



1927 Limulus 



Fatty yolk from Golgi 

 bodies. 



Albuminous yolk from 

 mitoehondria. 



Nucleolar extrusions. Yolk 

 as result of interaction 

 of Golgi, mitochondria, 

 nucleolar material and 

 cytoplasm. 



1929 Tenthridinidce 



from Golgi 

 yolk 



from 



1928 Discoglossus . 



1925 Gryllotalpa 



Fatty yolk 



vacuoles. 

 Albuminous 



nucleolus. 

 Fat (fatty yolk ?) indepen- 

 dent origin . 

 Yolk from vacuoles (Golgi 



vacuoles ?) 

 Albuminous yolk from 



nucleolus. 

 Albuminous yolk from 



Golgi bodies. 

 Yolk intimate with Golgi 



bodies. 

 Fatty yolk from vitelline 



layer. 

 Albuminous yolk from 



Golgi bodies. 

 Fatty yolk from part of 



Golgi bodies. 



First let us consider the question of the fatty or lipoidal yolk. 

 A great many of the observations summarised in the Table 

 show that there is a considerable body of opinion supporting 

 the belief that the fatty yolk is derived from the Golgi bodies. It 

 will be found that Gatenby and Woodger, Gatenby, Brambell, 

 Ludford, King and Nath are all of this opinion. 



Their investigations, further, are spread over a considerable 



