CELL-CONTENTS AND FORMS OF CELLS. 141 



c ss?!^ u ,fe$\ xw\ r 



grvuvj r LU iv f LUC ucrcwpmcnv ui 

 After Dippel in "Das Mikroskop." 



usually found in the interior of the chloroplastid, but may attain 

 such a size that they burst through the boundary wall of the 

 plastid, which latter in the final stage of the growth of the starch 

 grain forms a crescent-shaped disk attached to one end of the 



