204 SCIENTIFIC AND APPLIED PHARMACOGNOSY 



B 



FIG. 87. Myristica. A, transverse section through the kernel showing the 

 outer layer of perisperm (hp) with its inward ramifying projections (v), 

 which extend into the endosperm (d) ; in the latter are irregular cavities (s) 

 in which occurs a lighter and more recently developed tissue corresponding 

 to the endosperm. B, a surface view of the perisperm with brownish thin- 

 walled cells and containing an amorphous reddish-brown substance in which 

 rod-shaped crystals of either calcium carbonate or a salt of tartaric acid may 

 separate. C, transverse section showing perisperm composed of thin- 

 walled lignified cells having a reddish-brown content; cells of endosperm (E) 

 containing either starch grains (am), aleurone grains (a/), tannic acid, or a 

 reddish-brown amorphous substance (/) ; secondary perisperm (F) composed 

 of secretion cells having an amorphous brownish content and small paren- 

 chyma. D, transverse section through one of the infolded strands of peri- 



