FIXATIVE MIXTURES 15I 



finitesimal concentration ; from then onwards it will help to build 

 up the concentration there faster than it would have been built up 

 if the fixative had come from one side only. It follows that 

 although perfectly even fixation by all the ingredients at the same 

 time could only be achieved if they all had the same K- value, yet 

 the smaller the piece of tissue, the more even the fixation will be. 



