CZAPEK' S MEDIUM: (for molds) Sucrose 30 g., sodium nitrate 2 g., 

 dibasic potassium phosphate 1 g., magnesium sulfate 0.5 g., potassium 

 chloride 0.5 g. , ferrous sulfate 0.01 g. , water 1000 ml. 



FEHLING'S SOLUTION: Solution I. Cupric sulfate 34.65 g. in 500 ml. water. 



Solution II. Potassium hydroxide 125 g., Rochelle salts (sodium potassium 



tartrate) 173 g. , water to make 500 ml. Solutions mixed in equal volumes 

 for use. 



FIESER'S FLUID: Water 100 ml., sodium hydrosulfite 16 g., sodium 

 hydroxide 13.3 g., sodium anthraquinone-B-sulf onate 4 g. 



FILM PRESERVATIVE: (acetate base) Camphor 4 g., menthol 4 g., oil 

 eucalyptus 8 g., glycerine to make 125 ml. 



GLYCERINE JELLY: Water 60 ml., gelatin 10 g. , glycerine 70 ml., phenol 

 (cryst.) 0.25 g. Soak gelatin 30 minutes in the water, dissolve with 

 gentle heat. Add glycerine and phenol and stir until homogeneous. Store 

 in wide mouth bottle. 



GRAMS IODINE: Water 300 ml., potassium iodide 2 g. , iodine 1 g. ' Mix 

 KI and I2 in a few drops of water. When dissolved add the remaining 

 quantity of water. 



GREEN FILTER SOLUTION: Water 300 ml., cupric sulfate 35 g. , potassium 

 dichromate 3.5 g. , cone- sulfuric acid 1 ml. 



GROUND GLASS SUBSTITUTE: Ether 240 ml., sandarach 12 g. , mastic 2.6 g., 

 benzene 160 ml. 



HAINES SOLUTION: Water 170 ml., cupric sulfate 2 g. , potassium hydrox- 

 ide 6.7 g. , glycerine 15 ml. 



HAYEM'S SOLUTION: (for microscopic examination of blood) Water 1000 

 ml., mercuric chloride 2.5 g. , sodium sulfate (anhyd) 25 g. , sodium 

 chloride 5 g. 



HEAT ABSORBING FLUID: 2% aqueous calcium chloride. 



HEAT ABSORBING FLUID: Water 1000 ml., Mohr's salt (ferrous ammonium 

 sulfate) 200 g. Dissolve and filter. If not clear, add 1.7 ml. cone, 

 sulfuric acid. 



HOLTFRETER'S SOLUTION: Water 1000 ml., sodium chloride 3.50 g. , pot- 

 assium chloride 0.05 g., calcium chloride (anhyd) 0.10 g., sodium bicar- 

 bonate 0.20 g. When this is to be sterilized do not add the bicarbonate 

 until ready to use. 



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