88 



FIXATION 



picric acid, and acetic acid leave the tissue very soft and incapable 

 of being hardened to any considerable extent by subsequent 

 soaking in 80% ethanol. 



The effect of fixation on dyeing will be considered later in the 

 book (p. 202), when the nature of dyes and the way in which they 

 attach themselves to tissue-constituents have been discussed. 



