F'ES 9 



AEOHOPLASM DURING MITOSIS IN LARVAL SALAMANDEE. 181 



On the Relationships and Role of the Ar- 

 choplasm during Mitosis in the Larval 

 Salamander. 



By 



Joliu E. S. Moore, A.R.C.S. 



(From the Huxley Research Laboratory, Royal College of Science, Loudon.) 



With Plate XXL 



In the thirty- seventh volume of the ^Archiv fiir mikro- 

 skopische Anatomie^ F. Hermann figured and described certain 

 bodies existing in the dividing spermatocytes of the salamander 

 and Proteus in these words : '' Ausserhalb der deutlich sicht- 

 baren Kernmembran liegt nun diesen Kernen ungefahr in der 

 Form eines flachen Brodlaibes eine Scheibe kornigen Proto- 

 plasmas an^ die durch ihre dunkler Farbung deutlich sichtbar 

 wird." These archoplasmic bodies, as he named them, are 

 apparently homologous, on the one hand, with the " spheres- 

 attractives'^ of van Beneden (described as arising simulta- 

 neously), and on the other with that remarkable structure of 

 which Platner has said, '' Der in dem Protoplasma vieler 

 Zellen sich findende sogenannte Nebenkern' hat in neuerer Zeit 

 durch die Untersuchungen von Nussbaum, Gaule, Masanori 

 Ogata und Andern ein immer grosseres Interesse erregt." 



The great role which Platner ascribed to these bodies in the 



' The term Nebenkern has been applied to a great variety of structures by 

 as many authors, but as the majority of these descriptions relate to bodies 

 either parasitic or obviously different from the above, I have abstained from 

 any detailed reference to them. 



VOL. XXXIV, PART III. — NEW SEE. N 



