86 MOUNTING MEDIA. 



cc. Mix, and dissolve in it 260 grms. Gum Acacia, with fre- 

 quent stirring, at the ordinary temperature. 



This is Warrant's Medium, in which Iodine is substituted 

 for Arsenic. It is used for mounting tissues stained with 

 Iodine. 



ACETATE OF POTASSIUM. 



Acetate of Potassium, 250 grms. ; Water 100 cc. ; dissolve 

 by a gentle heat, and filter. 



ACETATE OF COPPER. 



Acetate of Copper, 1 grm. ; Glacial Acetic Acid, 1 cc. ; Cam- 

 phor Water, 250 cc. ; Glycerine, 250 cc. ; Corrosive Subli- 

 mate, 4 grms. 



Tor preserving and mounting Green Algse. The Glycerine 

 is sometimes omitted with advantage, as in the case of Yolvox. 



