ORIGIN OF VASCULAR TISSUES 



I'n.VNKLIN P. REVOAN 



PLATE 8 



Ect. 



§^^\ •. 



Pv.nict«. 

 I 



Endtli. 



Ent. 





'^'^ .' 



jk^'T f^ « 



• Pr^ 



U.^.;> • •• ; 



/ 



Endth. 



Pv.mch. 



37 



Endfh. Pv.mch 



Endth. 



^0 



38 



Endth. 



147 



