of the University of Pennsylvania. 53 



strable slight coloration of the contents of "gluten- 

 cells" after the application of Millon's reagent, it is 

 more than difficult to conceive a cell, however spe- 

 cialized, which shall exhibit no proteid matter as a 

 portion of its contents. Schenk also noted in arti- 

 ficial gastric digestions of sections of wheat, that 

 the starch-granules which (to a great extent) fill 

 the cells of the central portion of the grain became 

 detached, and from this fact deduced the just propo- 

 sition that the starch-granules lay imbedded in some 

 albuminoid substance. In a study of the distribu- 

 tion of gluten within the wheat-grain, 1 the senior 

 writer has described several methods for the ocular 

 demonstration of gluten, in very considerable 

 amount, in that portion of the grain included 

 within the fourth layer, and entirely independent of 

 the "gluten-cells." The methods were as follows: 



If whole wheat-grains be macerated in water, to 

 which a few drops of ether have been added to pre- 

 vent germination, they will in a few days become 

 thoroughly softened, and the contents of each grain 

 may then be squeezed out as a white, tenacious mass. 



Examination of the remaining bran shows the 



1 Randolph, Tree. Acad. Nat. Sci., Philadelphia, Dec. 11, 

 1883, p. 308. 



5* 



