77 



appears to make the casts or other elements stand out more 

 clearly. To detect the amyloid bodies or glycogen cells it is 

 necessary to use the iodine solution and this often times serves 

 to make the casts and other elements more distinctly visible. 



APPENDIX. 



Formulae for Reagents. 



Barium Chloride Solution for Centrifuge Sulphate Test. 

 Barum chloride, 4 parts 



Hydrochloric acid, 1 part 



Distilled water, 16 parts 



Barium Chloride Solution for Quantitative Test of Sulphates. 

 Pure crystallized barium chloride, 30.5 grams. 



Distilled water to 1000. cc. 



Baryta Mixture. This mixture is prepared by making sat- 

 urated solutions in the cold, of barium nitrate and barium hy- 

 drate, and adding two volumes of the hydrate to one volume of 

 the nitrate. 



Benedict's Solution. 



Benedict's Solutions for Quantitative Tests. For quantita- 

 tive work three solutions are employed, each kept in separate bot- 

 tles with rubber stoppers to prevent deterioration. Solution 1 is 



