The fir 



st is Homogeneous, the second Laminated wood, as 



















well kn 



3 wn, very thin bands of parenchyma occur in the annual 





is TomposeTof soTt e parUch y ma er oTthe othe^hTno! 







chymat 



ous masses and sclerenchymatous fibers. Typical of 



rnentio 



ed above, and the soft woods of the tropics, Ochroma. 







Thre 















species have light-weight wood. 





oma— In the United States the wood of this genus is 











In tr 























tropics the trees flower and fruit at the age of two to 



three y 



ars ; The average growth in diameter under favorable 



juvenile 



"tate.^The wo^rang" in weight from ^"2"^^ 



per cub 



c foot. The heart wood is homogeneous, silvery-white 



