WOODS. 



177 



PLATE LXXVIII. 



,v* 



re. 



FIG. 88. Powdered Yellow Sandal Wood (x 240). 



cr, Prismatic crystals of calcium oxalate. 



fl, Wood-fibres. 



pi, Wood parenchyma. 



rm, Medullary rays cut radially. 



r'm', The same cut tangentially. 



ten, Superposed crystal cells. 



v, Vessel, longitudinal aspect. 



v', The same, cut transversely. 



