PLATE I. 



1. tf, Wheat-starch granules. 

 1), Potato-starch granules. 



2. a, Corn-starch granules. 



b, Buckwheat-starch granules. 



3. Hsemin crystals, color brown. 



4. Cholesterin, colorless, transparent. 



5. Phenyl-glucosazone, yellow. 



6. a, Urea, colorless. 



6, Urea nitrate, colorless. 



