

£ 



4M#^ 



, imps mm 



P '■ -> ■ ,' S^WWLr ' -cv 3 



P -"/ 



Fig. III. — /r. atom of Zamia floritlctna; S, central cylinder of same; T, cortical foliar 

 bundle of Ci/cas r, vohita ; I ', petiolar bundle of same; I", section of part of leaf ol n 

 species of Onriloitw, II', cotylodonary bundle of Ginkgo b'rfoha: p.v, protoxylem ; 

 ,ri, centripetal wood ; .'■'-, centrifugal wood. 



