. Fio. -JSO. â Tracheid of ri/iiMdestroyed by Puly/ioru* fiMtoti-niioUltf. The celhilose li:is been for the umst imrt cxtnieted, and the wiUU con- sist of ligiiin (wt)iHl-giini). ofc-iir in the dry secondary wall, while the wall {(I, Ij) remains intact. The spiral .structure of the secondary wall causes cross- ing; of the tissurcs in the walls of adjoiniu); cells at the liordered jiits, c. ami at Ixire-holes, J, e ; where neither jnts nor holes are present the fissures are simple,/. (After H. UartiB.)

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectparasit, bookyear1897