SECTION THREE 



synthetic resinous mountants: however, there is a considerable 

 degree of shrinkage of the mountant on drying and it should there- 

 fore be apphed hberally to allow for this. 



EMEXEL MOUNTANT 



(Edward Gurr) 



Refractive index i -495 



A clear, colourless synthetic, xylol miscible, slightly acid 

 mounting medium. This mountant has a drying time intermediate 

 between Clearmount and Cristalite, and it does not darken with 

 age. 



FLUORMOUNT 



(Edward Gurr, 195 16) 



Refractive index 1*515 



A synthetic, colourless, neutral, xylol miscible, non-fluorescent 

 mountant for fluorescence microscopy. 



HYMOUNT 



Refractive index i -666 



A pale-straw coloured synthetic quick-drying mountant of high 

 refractive index, which is miscible with a number of aromatic and 

 aliphatic solvents such as xylol, benzene, chloroform, acetone and 

 absolute alcohol. 



LPM MOUNTANT 



(W. S. Ollett, 1947, 195 1) 



Refractive index I'S^S 



A synthetic mountant similar in composition to D.P.X., but 

 the solvent is monochlorobenzene and not xylol. Ollett found that 

 xylol leads to fading of Gram's stained preparations, and accord- 

 ingly devised LPM with the object of avoiding the use of a xylol- 

 containing mountant. 



523 



