PLATE 4 



EXPLANATION OF FIGURES 



80 and 81 Zenker's fluid; iron-haematoxylin. The intracellular network 

 is scarcely visible. 



82 Kopsch's fixing method; iron-haematoxylin. 



83 Muller-formalin and succeeding treatment with Midler's fluid; iron- 

 haematoxylin. 



84 Marchi's fixing method; iron-haematoxylin. 



85 to 88 Kopsch's osmium method for the Golgi's network. 



89 to 91 Sjovall's formalin-water-osmium method for the Golgi's network. 



92 to 94 Weigl's method for the Golgi's network. 



95 to 98 Cajal's uranic nitrate-silver method for the Golgi's network. 



418 



