APPENDIX 311 



Molisch's Reagent. 



A 15% alcoholic solution of <x naphthol. 



Nylander's Reagent. 



Digest 2 grams of bismuth subnitrate and 4 grams of 

 Rochelle salt in 100 c.c. of a 10% solution of potassium hy- 

 droxide. The reagent should then be cooled and filtered. 



Pancreatic Solution. ("Artificial pancreatic juice.") 



One per cent neutral solution of pancreatic powder in 

 water. 



Pepsin Solution. (Artificial gastric juice.) 



One per cent solution of pepsin flakes in 0.2% HC1. 



Potassium Bichromate N/2. 



Dissolve 24.55 grams pure potassium bichromate in distilled 

 water and make up to 1 liter of solution. 



Potassium Permanganate N/20. 



Dissolve 1.578 grams of the pure salt in distilled water 

 and make up to 1 liter. 



Potassium Pyroantimonate K 2 H 2 Sb 2 7 . 



Two grams of K 2 H 2 Sb 2 7 are added to 100 c.c. of boiling 

 water, the mixture is boiled until the salt is dissolved, and the 

 solution quickly cooled. Three c.c. of 10% KOH solution is 

 added to it to render the reagent alkaline. (Bray.) 



Silver Nitrate (Standard) for Volhard Chloride Method. 



One c.c. is equivalent to 0.01 grams NaCl. 

 Dissolve 29.042 grams of pure silver nitrate in distilled 

 water and make up to 1 liter. 



Sodium Cobaltinitrite Na 3 Co (N0 2 ) 6 . 



One hundred grams of NaN0 2 are dissolved in 200 c.c. of 

 water, and to this solution 50 c.c. of 6-molar acetic acid and 

 10 grams of Co(N0 3 ) 2 .6 aq. are added. After a day or two the 



