

; : 



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PLATK 23. TAXUS CTSPIDATA. Tangential section showing the character of the 

 very narrow and rather high medullary rays, x 52 



PI.ATK 24. THUJOPSIS IHM.AHRATA. Transverse section showing the narrow 



L:,]' iwth rings, the thin summer wood, and the distribution of resin celN i:i 

 the spring wood, x 4(1. S 



