I 12 



ROBERT H. BO WEN. 



(but see Martinotti '04), these threads seem to correspond in a 

 general way to the Cajal-Fusari reticulum, here revealed in a 

 fragmentary manner. 



Added proof is thus brought that this network, responding to 

 the silver nitrate and osmic methods for impregnating Golgi 

 material, actually is the homologue of the Golgi apparatus. It 



Ir j 



1 



2 



Fir,, i. Portion of a cross-section of a striated muscle fiber from the cat, 

 showing the sarcoplasm impregnated with osmic acid; sarcolemma appears along 

 the right-hand border. FIG. 2. Longitudinal section of the same kind of muscle, 

 showing fragmentary impregnation by osmic acid of the muscle reticulum of 

 Cajal-Fusari (= Golgi apparatus?). Both figures X 2150. 



seems to me that the final demonstration of this homology can 

 be obtained only by a study of the development of the network 

 from a stage in which the original condition of the Golgi apparatus 

 will permit its identification beyond dispute. Such an identifi- 

 cation seems to have been made by Faiianas ('12), who claims 

 that in the chick embryo (from the sixth day on) the Golgi 

 apparatus of the muscle cells (tubular phase) can be made out 

 as granules and rods locali/ed in the protoplasmic axis of the fiber. 

 Concerning the forms and metamorphosis undergone by this ma- 

 terial until the complicated net of the mature muscle fiber is 

 completed, he states that he will treat in detail in a special paper. 

 Hut I can not find that this paper has appeared. 



