————— Sh hl CT 
PLATE 104 
. Ko 
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PowDERED WHITE PINE Bark (Pinus strobus, L.) 
1. Epidermis. 
Medullary rays. 
2. Parenchyma cells. 
3. Parenchyma with starch. 4. 
5. Solitary crystals. 6. Solitary crystals and tannin. 7, 8 
and 10. Resin masses. 9. Starch. 
