296 



SCIENTIFIC AND APPLIED PHARMACOGNOSY 



FIG. 132. Sections of almond seed: A, cross-section of seed-coat treated with 

 cold potassium hydrate solution and showing outer epidermis (E), inner 

 epidermis (Ei), between which is rather loose parenchyma (p), tissues of 

 nucellus (AO and endosperm (En). B, parenchyma (p) with large inter- 

 cellular spaces and the inner epidermis of the seed-coat (Ei}. C, transverse 

 section of inner epidermis (Ei) and the outer cells of the nucellus (N). D, 

 more or less obliterated cells of nucellus (N) and two layers of the endosperm 

 (En), which remain intact in the ripe seed. After Meyer 



FIG. 133. Almond meal: a, stone cells of the outer epidermis; K, brown hypo- 

 dermal cells; sp, spiral tracheae of the seed-coat; ep, cells of inner epidermis 

 which contain a brownish content that is not shown here; E, cells of the 

 endosperm containing numerous small aleurone grains; Ca, epidermal cells 

 of cotyledons; C, parenchyma of the cotyledons containing aleurone grains 

 and oil. After Moeller. 



