MICROSCOPY OF THE COMMON STARCHES. 



65 



sugars. It may often be found as an adulterant in the 

 more costly starches, and in spices and other foods. 

 Its grain is easily recognized, being of medium size. 



•''^^o: 



o o 

 O 



s> 





(J 



CO 



(Q 



^ 



®^ o 



® ^ 

 ^6 Q 



Fig. 28. — ^The Commoner Starches. (Redrawn, after Scliimper.) 

 240 diameters. 



1. Wheat-starch. 



2. Corn-starch. 



3. Rice-starch. 



4. Tapioca-starch. 



5. Potato-starch. 



6. Bean-starch. 



.0I-.02 mm., and of a characteristic polyhedral form, its 

 angularity at once distinguishing it from the starches of 

 wheat and potato. Since it is not flattened like the latter. 



