I cm 



MERCURIC 

 CHLORIDE 



PICRIC 

 ACID 



CHROMIUM 

 TRIOXIDE 









\:2^'. 





..5 * 



v 



i ^ 



FIG. 5. 



A, lobes of the li\er of the rabbit left for 24 hours in fixatives (at the concentrations 

 shown on p. 24) and then cut across.^ '^ B-E, photomicrographs illustrating Young's experi- 

 ments on the addition of indifferent salts to fixatives. The cells are neurones in the stellate 

 ganglion of Sepia officinalis. B, fixed in 4",, formaldehyde dissolved in distilled water; c, 

 in the same dissolved in sea-water. D, fixed in Champy's fluid made up w'ith distilled 

 water; E, in the same made up with sea-water. 



(b-e are reproduced by kind permission of Prof. J. Z. Young and of the Editors and 

 Publishers of Nature.) 



