IODINE, TINCTURE: U.S. P. 70% Alcohol 1000 ml., iodine 70 g. , potassium 

 iodide 50 g. 



IODINE, WATER: Water 1000 ml., iodine 0.2 g. 



KEEFE'S SOLUTION: (for preserving green organisms) Alcohol 50% 

 90 ml., formaldehyde 5 ml., acetic acid (glacial) 2.5 ml., glycerine 

 2.5 ml., cupric chloride 10 g. , uranium nitrate 1.5 g. 



KLOTZ SOLUTION: (for preservation of invertebrate animals) Chloral 

 hydrate 50 g., Carlsbad salts (see above) 50g. , formalin 100 ml., water 

 to make 1000 ml. 



KNOP'S SOLUTION: Water 1000 ml., calcium nitrate 1 g., potassium 

 chloride 0.25 g., magnesium sulfate 0.25 g. , monobasic potassium phos- 

 phate 0.25 g., ferric chloride trace. 



KNOP'S SOLUTION: (modification) Water 1000 ml., potassium nitrate 

 1 g. , calcium sulfate 0.5 g. , magnesium sulfate 0.5 g. , calcium phos- 

 phate 0.25 g. , ferrous phosphate 0.25 g. 



LOCKE'S SOLUTION: (for warm blooded animals ) Water 1000 ml., sod- 

 ium chloride 9 g., calcium chloride (anhyd) 0.24 g. , potassium chloride 

 0.42 g. , sodium bicarbonate 0.2 g. , dextrin 2.5 g. 



LUGKDL'S IODINE: Water 100 ml., iodine 4 g. , potassium iodide 6g'. 

 Mix KI and I2 with a few drops of the water. When dissolved, add the 

 remaining quantity of water. 



MAYER'S ALBUMEN FIXATIVE: Separate the white albumen and cut it 

 with scissors to break up the large masses. Filter through coarse 

 filter paper and add an equal volume of glycerine. A crystal of thymol 

 acts as a preservative. 



MASSART'S MOUNTING MEDIUM: Water 100 ml., glycerine 16 ml., chloral 

 hydrate 100 g. , gum arabic 50 g. After fixing in distilled water for 

 24 hours, then 24 hours in 50% chloral hydrate followed by 24 hours in 

 100% chloral hydrate and then mounted in the above solution. (Courtesy 

 Dr. Navez) 



MILLON'S REAGENT: (for proteins and nitrogenous compounds) Mercury 

 10 g., concentrated nitric acid 15 ml. Dissolve the mercury in the 

 acid, then dilute the solution with 2 volumes of water. Let stand 24 

 hours and decant. Gives a red color with proteins. 



MIQUEL'S SOLUTION: I (culture fluid for diatoms) A. Water 100 ml. 

 magnesium sulfate 10 g., sodium cliloride 10 g., sodium sulfate 5 g., 



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